From 285d90cc00f78b37402f2bd590562737d9688321 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Mon, 12 Jun 2023 22:41:45 -0400
Subject: [PATCH 01/26] chore: Add framework for iam showcase tests

---
 .../com/google/showcase/v1beta1/it/ITIam.java | 54 +++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
new file mode 100644
index 0000000000..bb6a297c0b
--- /dev/null
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.google.showcase.v1beta1.it;
+
+import com.google.iam.v1.Binding;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.showcase.v1beta1.EchoClient;
+import com.google.showcase.v1beta1.it.util.TestClientInitializer;
+import java.util.concurrent.TimeUnit;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+
+public class ITIam {
+  private static EchoClient grpcClient;
+  private static EchoClient httpjsonClient;
+
+  @BeforeClass
+  public static void createClients() throws Exception {
+    grpcClient = TestClientInitializer.createGrpcEchoClient();
+    httpjsonClient = TestClientInitializer.createHttpJsonEchoClient();
+  }
+
+  @AfterClass
+  public static void destroyClients() throws InterruptedException {
+    grpcClient.close();
+    httpjsonClient.close();
+
+    grpcClient.awaitTermination(TestClientInitializer.AWAIT_TERMINATION_SECONDS, TimeUnit.SECONDS);
+    httpjsonClient.awaitTermination(
+        TestClientInitializer.AWAIT_TERMINATION_SECONDS, TimeUnit.SECONDS);
+  }
+
+  public void testGrpc_setIamPolicy() {
+    SetIamPolicyRequest policyRequest = SetIamPolicyRequest.newBuilder()
+            .setPolicy(
+                    Policy.newBuilder()
+                            .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers")))
+            .build();
+  }
+}

From dbf80852cf65a0e591642a1ffd4c2b1c0576296d Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Tue, 13 Jun 2023 11:12:50 -0400
Subject: [PATCH 02/26] chore: Generate clients with IAM stubs

---
 showcase/BUILD.bazel                          |   9 +-
 .../showcase/v1beta1/ComplianceClient.java    | 208 ++++++++++++++++++
 .../showcase/v1beta1/ComplianceSettings.java  |  37 ++++
 .../google/showcase/v1beta1/EchoClient.java   | 208 ++++++++++++++++++
 .../google/showcase/v1beta1/EchoSettings.java |  37 ++++
 .../showcase/v1beta1/IdentityClient.java      | 208 ++++++++++++++++++
 .../showcase/v1beta1/IdentitySettings.java    |  37 ++++
 .../showcase/v1beta1/MessagingClient.java     | 208 ++++++++++++++++++
 .../showcase/v1beta1/MessagingSettings.java   |  37 ++++
 .../v1beta1/SequenceServiceClient.java        | 208 ++++++++++++++++++
 .../v1beta1/SequenceServiceSettings.java      |  37 ++++
 .../showcase/v1beta1/TestingClient.java       | 208 ++++++++++++++++++
 .../showcase/v1beta1/TestingSettings.java     |  37 ++++
 .../showcase/v1beta1/gapic_metadata.json      |  54 +++++
 .../showcase/v1beta1/stub/ComplianceStub.java |  18 ++
 .../v1beta1/stub/ComplianceStubSettings.java  |  79 ++++++-
 .../showcase/v1beta1/stub/EchoStub.java       |  18 ++
 .../v1beta1/stub/EchoStubSettings.java        |  79 ++++++-
 .../v1beta1/stub/GrpcComplianceStub.java      |  94 ++++++++
 .../showcase/v1beta1/stub/GrpcEchoStub.java   |  94 ++++++++
 .../v1beta1/stub/GrpcIdentityStub.java        |  94 ++++++++
 .../v1beta1/stub/GrpcMessagingStub.java       |  94 ++++++++
 .../v1beta1/stub/GrpcSequenceServiceStub.java |  94 ++++++++
 .../v1beta1/stub/GrpcTestingStub.java         |  94 ++++++++
 .../v1beta1/stub/HttpJsonComplianceStub.java  | 190 ++++++++++++++++
 .../v1beta1/stub/HttpJsonEchoStub.java        | 190 ++++++++++++++++
 .../v1beta1/stub/HttpJsonIdentityStub.java    | 190 ++++++++++++++++
 .../v1beta1/stub/HttpJsonMessagingStub.java   | 190 ++++++++++++++++
 .../stub/HttpJsonSequenceServiceStub.java     | 190 ++++++++++++++++
 .../v1beta1/stub/HttpJsonTestingStub.java     | 190 ++++++++++++++++
 .../showcase/v1beta1/stub/IdentityStub.java   |  18 ++
 .../v1beta1/stub/IdentityStubSettings.java    |  79 ++++++-
 .../showcase/v1beta1/stub/MessagingStub.java  |  18 ++
 .../v1beta1/stub/MessagingStubSettings.java   |  79 ++++++-
 .../v1beta1/stub/SequenceServiceStub.java     |  18 ++
 .../stub/SequenceServiceStubSettings.java     |  79 ++++++-
 .../showcase/v1beta1/stub/TestingStub.java    |  18 ++
 .../v1beta1/stub/TestingStubSettings.java     |  79 ++++++-
 .../v1beta1/ComplianceClientHttpJsonTest.java | 184 ++++++++++++++++
 .../v1beta1/ComplianceClientTest.java         | 175 ++++++++++++++-
 .../v1beta1/EchoClientHttpJsonTest.java       | 184 ++++++++++++++++
 .../showcase/v1beta1/EchoClientTest.java      | 175 ++++++++++++++-
 .../v1beta1/IdentityClientHttpJsonTest.java   | 184 ++++++++++++++++
 .../showcase/v1beta1/IdentityClientTest.java  | 174 ++++++++++++++-
 .../v1beta1/MessagingClientHttpJsonTest.java  | 182 +++++++++++++++
 .../showcase/v1beta1/MessagingClientTest.java | 172 ++++++++++++++-
 .../SequenceServiceClientHttpJsonTest.java    | 184 ++++++++++++++++
 .../v1beta1/SequenceServiceClientTest.java    | 174 ++++++++++++++-
 .../v1beta1/TestingClientHttpJsonTest.java    | 183 +++++++++++++++
 .../showcase/v1beta1/TestingClientTest.java   | 173 ++++++++++++++-
 50 files changed, 5942 insertions(+), 21 deletions(-)

diff --git a/showcase/BUILD.bazel b/showcase/BUILD.bazel
index 9c893230e0..14435f6903 100644
--- a/showcase/BUILD.bazel
+++ b/showcase/BUILD.bazel
@@ -19,7 +19,8 @@ proto_library_with_info(
         "@com_google_gapic_showcase//schema/google/showcase/v1beta1:showcase_proto",
 #        "//showcase/gapic-showcase-extended/proto:showcase_proto_extended",
         "@com_google_googleapis//google/cloud:common_resources_proto",
-        "@com_google_googleapis//google/cloud/location:location_proto"
+        "@com_google_googleapis//google/cloud/location:location_proto",
+        "@com_google_googleapis//google/iam/v1:iam_policy_proto"
     ],
 )
 
@@ -57,13 +58,15 @@ java_gapic_library(
     test_deps = [
         ":showcase_java_grpc",
 #        ":showcase_java_grpc_extended",
-        "@com_google_googleapis//google/cloud/location:location_java_grpc"
+        "@com_google_googleapis//google/cloud/location:location_java_grpc",
+        "@com_google_googleapis//google/iam/v1:iam_java_grpc"
     ],
     transport = "grpc+rest",
     deps = [
         ":showcase_java_proto",
         "@com_google_googleapis//google/api:api_java_proto",
-        "@com_google_googleapis//google/cloud/location:location_java_proto"
+        "@com_google_googleapis//google/cloud/location:location_java_proto",
+        "@com_google_googleapis//google/iam/v1:iam_java_proto"
    ],
 )
 
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/ComplianceClient.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/ComplianceClient.java
index 1b1b9cd00a..920440bde1 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/ComplianceClient.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/ComplianceClient.java
@@ -30,6 +30,11 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.util.concurrent.MoreExecutors;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.showcase.v1beta1.stub.ComplianceStub;
 import com.google.showcase.v1beta1.stub.ComplianceStubSettings;
 import java.io.IOException;
@@ -1081,6 +1086,209 @@ public final UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     return stub.getLocationCallable();
   }
 
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Sets the access control policy on the specified resource. Replaces any existing policy.
+   *
+   * <p>Can return `NOT_FOUND`, `INVALID_ARGUMENT`, and `PERMISSION_DENIED` errors.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (ComplianceClient complianceClient = ComplianceClient.create()) {
+   *   SetIamPolicyRequest request =
+   *       SetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setPolicy(Policy.newBuilder().build())
+   *           .setUpdateMask(FieldMask.newBuilder().build())
+   *           .build();
+   *   Policy response = complianceClient.setIamPolicy(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final Policy setIamPolicy(SetIamPolicyRequest request) {
+    return setIamPolicyCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Sets the access control policy on the specified resource. Replaces any existing policy.
+   *
+   * <p>Can return `NOT_FOUND`, `INVALID_ARGUMENT`, and `PERMISSION_DENIED` errors.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (ComplianceClient complianceClient = ComplianceClient.create()) {
+   *   SetIamPolicyRequest request =
+   *       SetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setPolicy(Policy.newBuilder().build())
+   *           .setUpdateMask(FieldMask.newBuilder().build())
+   *           .build();
+   *   ApiFuture<Policy> future = complianceClient.setIamPolicyCallable().futureCall(request);
+   *   // Do something.
+   *   Policy response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    return stub.setIamPolicyCallable();
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Gets the access control policy for a resource. Returns an empty policy if the resource exists
+   * and does not have a policy set.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (ComplianceClient complianceClient = ComplianceClient.create()) {
+   *   GetIamPolicyRequest request =
+   *       GetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setOptions(GetPolicyOptions.newBuilder().build())
+   *           .build();
+   *   Policy response = complianceClient.getIamPolicy(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final Policy getIamPolicy(GetIamPolicyRequest request) {
+    return getIamPolicyCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Gets the access control policy for a resource. Returns an empty policy if the resource exists
+   * and does not have a policy set.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (ComplianceClient complianceClient = ComplianceClient.create()) {
+   *   GetIamPolicyRequest request =
+   *       GetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setOptions(GetPolicyOptions.newBuilder().build())
+   *           .build();
+   *   ApiFuture<Policy> future = complianceClient.getIamPolicyCallable().futureCall(request);
+   *   // Do something.
+   *   Policy response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    return stub.getIamPolicyCallable();
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Returns permissions that a caller has on the specified resource. If the resource does not
+   * exist, this will return an empty set of permissions, not a `NOT_FOUND` error.
+   *
+   * <p>Note: This operation is designed to be used for building permission-aware UIs and
+   * command-line tools, not for authorization checking. This operation may "fail open" without
+   * warning.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (ComplianceClient complianceClient = ComplianceClient.create()) {
+   *   TestIamPermissionsRequest request =
+   *       TestIamPermissionsRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .addAllPermissions(new ArrayList<String>())
+   *           .build();
+   *   TestIamPermissionsResponse response = complianceClient.testIamPermissions(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final TestIamPermissionsResponse testIamPermissions(TestIamPermissionsRequest request) {
+    return testIamPermissionsCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Returns permissions that a caller has on the specified resource. If the resource does not
+   * exist, this will return an empty set of permissions, not a `NOT_FOUND` error.
+   *
+   * <p>Note: This operation is designed to be used for building permission-aware UIs and
+   * command-line tools, not for authorization checking. This operation may "fail open" without
+   * warning.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (ComplianceClient complianceClient = ComplianceClient.create()) {
+   *   TestIamPermissionsRequest request =
+   *       TestIamPermissionsRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .addAllPermissions(new ArrayList<String>())
+   *           .build();
+   *   ApiFuture<TestIamPermissionsResponse> future =
+   *       complianceClient.testIamPermissionsCallable().futureCall(request);
+   *   // Do something.
+   *   TestIamPermissionsResponse response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    return stub.testIamPermissionsCallable();
+  }
+
   @Override
   public final void close() {
     stub.close();
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/ComplianceSettings.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/ComplianceSettings.java
index 3e3a4beaa5..050afe24dd 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/ComplianceSettings.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/ComplianceSettings.java
@@ -35,6 +35,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.showcase.v1beta1.stub.ComplianceStubSettings;
 import java.io.IOException;
 import java.util.List;
@@ -141,6 +146,22 @@ public UnaryCallSettings<GetLocationRequest, Location> getLocationSettings() {
     return ((ComplianceStubSettings) getStubSettings()).getLocationSettings();
   }
 
+  /** Returns the object with the settings used for calls to setIamPolicy. */
+  public UnaryCallSettings<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+    return ((ComplianceStubSettings) getStubSettings()).setIamPolicySettings();
+  }
+
+  /** Returns the object with the settings used for calls to getIamPolicy. */
+  public UnaryCallSettings<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+    return ((ComplianceStubSettings) getStubSettings()).getIamPolicySettings();
+  }
+
+  /** Returns the object with the settings used for calls to testIamPermissions. */
+  public UnaryCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsSettings() {
+    return ((ComplianceStubSettings) getStubSettings()).testIamPermissionsSettings();
+  }
+
   public static final ComplianceSettings create(ComplianceStubSettings stub) throws IOException {
     return new ComplianceSettings.Builder(stub.toBuilder()).build();
   }
@@ -319,6 +340,22 @@ public UnaryCallSettings.Builder<GetLocationRequest, Location> getLocationSettin
       return getStubSettingsBuilder().getLocationSettings();
     }
 
+    /** Returns the builder for the settings used for calls to setIamPolicy. */
+    public UnaryCallSettings.Builder<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+      return getStubSettingsBuilder().setIamPolicySettings();
+    }
+
+    /** Returns the builder for the settings used for calls to getIamPolicy. */
+    public UnaryCallSettings.Builder<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+      return getStubSettingsBuilder().getIamPolicySettings();
+    }
+
+    /** Returns the builder for the settings used for calls to testIamPermissions. */
+    public UnaryCallSettings.Builder<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsSettings() {
+      return getStubSettingsBuilder().testIamPermissionsSettings();
+    }
+
     @Override
     public ComplianceSettings build() throws IOException {
       return new ComplianceSettings(this);
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/EchoClient.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/EchoClient.java
index 7eae457785..270edd3f81 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/EchoClient.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/EchoClient.java
@@ -36,6 +36,11 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.util.concurrent.MoreExecutors;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.Operation;
 import com.google.showcase.v1beta1.stub.EchoStub;
 import com.google.showcase.v1beta1.stub.EchoStubSettings;
@@ -957,6 +962,209 @@ public final UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     return stub.getLocationCallable();
   }
 
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Sets the access control policy on the specified resource. Replaces any existing policy.
+   *
+   * <p>Can return `NOT_FOUND`, `INVALID_ARGUMENT`, and `PERMISSION_DENIED` errors.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (EchoClient echoClient = EchoClient.create()) {
+   *   SetIamPolicyRequest request =
+   *       SetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setPolicy(Policy.newBuilder().build())
+   *           .setUpdateMask(FieldMask.newBuilder().build())
+   *           .build();
+   *   Policy response = echoClient.setIamPolicy(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final Policy setIamPolicy(SetIamPolicyRequest request) {
+    return setIamPolicyCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Sets the access control policy on the specified resource. Replaces any existing policy.
+   *
+   * <p>Can return `NOT_FOUND`, `INVALID_ARGUMENT`, and `PERMISSION_DENIED` errors.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (EchoClient echoClient = EchoClient.create()) {
+   *   SetIamPolicyRequest request =
+   *       SetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setPolicy(Policy.newBuilder().build())
+   *           .setUpdateMask(FieldMask.newBuilder().build())
+   *           .build();
+   *   ApiFuture<Policy> future = echoClient.setIamPolicyCallable().futureCall(request);
+   *   // Do something.
+   *   Policy response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    return stub.setIamPolicyCallable();
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Gets the access control policy for a resource. Returns an empty policy if the resource exists
+   * and does not have a policy set.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (EchoClient echoClient = EchoClient.create()) {
+   *   GetIamPolicyRequest request =
+   *       GetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setOptions(GetPolicyOptions.newBuilder().build())
+   *           .build();
+   *   Policy response = echoClient.getIamPolicy(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final Policy getIamPolicy(GetIamPolicyRequest request) {
+    return getIamPolicyCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Gets the access control policy for a resource. Returns an empty policy if the resource exists
+   * and does not have a policy set.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (EchoClient echoClient = EchoClient.create()) {
+   *   GetIamPolicyRequest request =
+   *       GetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setOptions(GetPolicyOptions.newBuilder().build())
+   *           .build();
+   *   ApiFuture<Policy> future = echoClient.getIamPolicyCallable().futureCall(request);
+   *   // Do something.
+   *   Policy response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    return stub.getIamPolicyCallable();
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Returns permissions that a caller has on the specified resource. If the resource does not
+   * exist, this will return an empty set of permissions, not a `NOT_FOUND` error.
+   *
+   * <p>Note: This operation is designed to be used for building permission-aware UIs and
+   * command-line tools, not for authorization checking. This operation may "fail open" without
+   * warning.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (EchoClient echoClient = EchoClient.create()) {
+   *   TestIamPermissionsRequest request =
+   *       TestIamPermissionsRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .addAllPermissions(new ArrayList<String>())
+   *           .build();
+   *   TestIamPermissionsResponse response = echoClient.testIamPermissions(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final TestIamPermissionsResponse testIamPermissions(TestIamPermissionsRequest request) {
+    return testIamPermissionsCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Returns permissions that a caller has on the specified resource. If the resource does not
+   * exist, this will return an empty set of permissions, not a `NOT_FOUND` error.
+   *
+   * <p>Note: This operation is designed to be used for building permission-aware UIs and
+   * command-line tools, not for authorization checking. This operation may "fail open" without
+   * warning.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (EchoClient echoClient = EchoClient.create()) {
+   *   TestIamPermissionsRequest request =
+   *       TestIamPermissionsRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .addAllPermissions(new ArrayList<String>())
+   *           .build();
+   *   ApiFuture<TestIamPermissionsResponse> future =
+   *       echoClient.testIamPermissionsCallable().futureCall(request);
+   *   // Do something.
+   *   TestIamPermissionsResponse response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    return stub.testIamPermissionsCallable();
+  }
+
   @Override
   public final void close() {
     stub.close();
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/EchoSettings.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/EchoSettings.java
index dfac5477a8..7725d2cdd2 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/EchoSettings.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/EchoSettings.java
@@ -40,6 +40,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.Operation;
 import com.google.showcase.v1beta1.stub.EchoStubSettings;
 import java.io.IOException;
@@ -151,6 +156,22 @@ public UnaryCallSettings<GetLocationRequest, Location> getLocationSettings() {
     return ((EchoStubSettings) getStubSettings()).getLocationSettings();
   }
 
+  /** Returns the object with the settings used for calls to setIamPolicy. */
+  public UnaryCallSettings<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+    return ((EchoStubSettings) getStubSettings()).setIamPolicySettings();
+  }
+
+  /** Returns the object with the settings used for calls to getIamPolicy. */
+  public UnaryCallSettings<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+    return ((EchoStubSettings) getStubSettings()).getIamPolicySettings();
+  }
+
+  /** Returns the object with the settings used for calls to testIamPermissions. */
+  public UnaryCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsSettings() {
+    return ((EchoStubSettings) getStubSettings()).testIamPermissionsSettings();
+  }
+
   public static final EchoSettings create(EchoStubSettings stub) throws IOException {
     return new EchoSettings.Builder(stub.toBuilder()).build();
   }
@@ -335,6 +356,22 @@ public UnaryCallSettings.Builder<GetLocationRequest, Location> getLocationSettin
       return getStubSettingsBuilder().getLocationSettings();
     }
 
+    /** Returns the builder for the settings used for calls to setIamPolicy. */
+    public UnaryCallSettings.Builder<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+      return getStubSettingsBuilder().setIamPolicySettings();
+    }
+
+    /** Returns the builder for the settings used for calls to getIamPolicy. */
+    public UnaryCallSettings.Builder<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+      return getStubSettingsBuilder().getIamPolicySettings();
+    }
+
+    /** Returns the builder for the settings used for calls to testIamPermissions. */
+    public UnaryCallSettings.Builder<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsSettings() {
+      return getStubSettingsBuilder().testIamPermissionsSettings();
+    }
+
     @Override
     public EchoSettings build() throws IOException {
       return new EchoSettings(this);
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/IdentityClient.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/IdentityClient.java
index e9d0a348b7..2641382e45 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/IdentityClient.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/IdentityClient.java
@@ -30,6 +30,11 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.util.concurrent.MoreExecutors;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import com.google.showcase.v1beta1.stub.IdentityStub;
 import com.google.showcase.v1beta1.stub.IdentityStubSettings;
@@ -835,6 +840,209 @@ public final UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     return stub.getLocationCallable();
   }
 
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Sets the access control policy on the specified resource. Replaces any existing policy.
+   *
+   * <p>Can return `NOT_FOUND`, `INVALID_ARGUMENT`, and `PERMISSION_DENIED` errors.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (IdentityClient identityClient = IdentityClient.create()) {
+   *   SetIamPolicyRequest request =
+   *       SetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setPolicy(Policy.newBuilder().build())
+   *           .setUpdateMask(FieldMask.newBuilder().build())
+   *           .build();
+   *   Policy response = identityClient.setIamPolicy(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final Policy setIamPolicy(SetIamPolicyRequest request) {
+    return setIamPolicyCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Sets the access control policy on the specified resource. Replaces any existing policy.
+   *
+   * <p>Can return `NOT_FOUND`, `INVALID_ARGUMENT`, and `PERMISSION_DENIED` errors.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (IdentityClient identityClient = IdentityClient.create()) {
+   *   SetIamPolicyRequest request =
+   *       SetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setPolicy(Policy.newBuilder().build())
+   *           .setUpdateMask(FieldMask.newBuilder().build())
+   *           .build();
+   *   ApiFuture<Policy> future = identityClient.setIamPolicyCallable().futureCall(request);
+   *   // Do something.
+   *   Policy response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    return stub.setIamPolicyCallable();
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Gets the access control policy for a resource. Returns an empty policy if the resource exists
+   * and does not have a policy set.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (IdentityClient identityClient = IdentityClient.create()) {
+   *   GetIamPolicyRequest request =
+   *       GetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setOptions(GetPolicyOptions.newBuilder().build())
+   *           .build();
+   *   Policy response = identityClient.getIamPolicy(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final Policy getIamPolicy(GetIamPolicyRequest request) {
+    return getIamPolicyCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Gets the access control policy for a resource. Returns an empty policy if the resource exists
+   * and does not have a policy set.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (IdentityClient identityClient = IdentityClient.create()) {
+   *   GetIamPolicyRequest request =
+   *       GetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setOptions(GetPolicyOptions.newBuilder().build())
+   *           .build();
+   *   ApiFuture<Policy> future = identityClient.getIamPolicyCallable().futureCall(request);
+   *   // Do something.
+   *   Policy response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    return stub.getIamPolicyCallable();
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Returns permissions that a caller has on the specified resource. If the resource does not
+   * exist, this will return an empty set of permissions, not a `NOT_FOUND` error.
+   *
+   * <p>Note: This operation is designed to be used for building permission-aware UIs and
+   * command-line tools, not for authorization checking. This operation may "fail open" without
+   * warning.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (IdentityClient identityClient = IdentityClient.create()) {
+   *   TestIamPermissionsRequest request =
+   *       TestIamPermissionsRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .addAllPermissions(new ArrayList<String>())
+   *           .build();
+   *   TestIamPermissionsResponse response = identityClient.testIamPermissions(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final TestIamPermissionsResponse testIamPermissions(TestIamPermissionsRequest request) {
+    return testIamPermissionsCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Returns permissions that a caller has on the specified resource. If the resource does not
+   * exist, this will return an empty set of permissions, not a `NOT_FOUND` error.
+   *
+   * <p>Note: This operation is designed to be used for building permission-aware UIs and
+   * command-line tools, not for authorization checking. This operation may "fail open" without
+   * warning.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (IdentityClient identityClient = IdentityClient.create()) {
+   *   TestIamPermissionsRequest request =
+   *       TestIamPermissionsRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .addAllPermissions(new ArrayList<String>())
+   *           .build();
+   *   ApiFuture<TestIamPermissionsResponse> future =
+   *       identityClient.testIamPermissionsCallable().futureCall(request);
+   *   // Do something.
+   *   TestIamPermissionsResponse response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    return stub.testIamPermissionsCallable();
+  }
+
   @Override
   public final void close() {
     stub.close();
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/IdentitySettings.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/IdentitySettings.java
index 0cf54dacbc..81d98ff0c1 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/IdentitySettings.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/IdentitySettings.java
@@ -36,6 +36,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import com.google.showcase.v1beta1.stub.IdentityStubSettings;
 import java.io.IOException;
@@ -119,6 +124,22 @@ public UnaryCallSettings<GetLocationRequest, Location> getLocationSettings() {
     return ((IdentityStubSettings) getStubSettings()).getLocationSettings();
   }
 
+  /** Returns the object with the settings used for calls to setIamPolicy. */
+  public UnaryCallSettings<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+    return ((IdentityStubSettings) getStubSettings()).setIamPolicySettings();
+  }
+
+  /** Returns the object with the settings used for calls to getIamPolicy. */
+  public UnaryCallSettings<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+    return ((IdentityStubSettings) getStubSettings()).getIamPolicySettings();
+  }
+
+  /** Returns the object with the settings used for calls to testIamPermissions. */
+  public UnaryCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsSettings() {
+    return ((IdentityStubSettings) getStubSettings()).testIamPermissionsSettings();
+  }
+
   public static final IdentitySettings create(IdentityStubSettings stub) throws IOException {
     return new IdentitySettings.Builder(stub.toBuilder()).build();
   }
@@ -271,6 +292,22 @@ public UnaryCallSettings.Builder<GetLocationRequest, Location> getLocationSettin
       return getStubSettingsBuilder().getLocationSettings();
     }
 
+    /** Returns the builder for the settings used for calls to setIamPolicy. */
+    public UnaryCallSettings.Builder<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+      return getStubSettingsBuilder().setIamPolicySettings();
+    }
+
+    /** Returns the builder for the settings used for calls to getIamPolicy. */
+    public UnaryCallSettings.Builder<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+      return getStubSettingsBuilder().getIamPolicySettings();
+    }
+
+    /** Returns the builder for the settings used for calls to testIamPermissions. */
+    public UnaryCallSettings.Builder<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsSettings() {
+      return getStubSettingsBuilder().testIamPermissionsSettings();
+    }
+
     @Override
     public IdentitySettings build() throws IOException {
       return new IdentitySettings(this);
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/MessagingClient.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/MessagingClient.java
index d2476e05ee..01e09e2257 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/MessagingClient.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/MessagingClient.java
@@ -36,6 +36,11 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.util.concurrent.MoreExecutors;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.Operation;
 import com.google.protobuf.ByteString;
 import com.google.protobuf.Empty;
@@ -2105,6 +2110,209 @@ public final UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     return stub.getLocationCallable();
   }
 
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Sets the access control policy on the specified resource. Replaces any existing policy.
+   *
+   * <p>Can return `NOT_FOUND`, `INVALID_ARGUMENT`, and `PERMISSION_DENIED` errors.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (MessagingClient messagingClient = MessagingClient.create()) {
+   *   SetIamPolicyRequest request =
+   *       SetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setPolicy(Policy.newBuilder().build())
+   *           .setUpdateMask(FieldMask.newBuilder().build())
+   *           .build();
+   *   Policy response = messagingClient.setIamPolicy(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final Policy setIamPolicy(SetIamPolicyRequest request) {
+    return setIamPolicyCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Sets the access control policy on the specified resource. Replaces any existing policy.
+   *
+   * <p>Can return `NOT_FOUND`, `INVALID_ARGUMENT`, and `PERMISSION_DENIED` errors.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (MessagingClient messagingClient = MessagingClient.create()) {
+   *   SetIamPolicyRequest request =
+   *       SetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setPolicy(Policy.newBuilder().build())
+   *           .setUpdateMask(FieldMask.newBuilder().build())
+   *           .build();
+   *   ApiFuture<Policy> future = messagingClient.setIamPolicyCallable().futureCall(request);
+   *   // Do something.
+   *   Policy response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    return stub.setIamPolicyCallable();
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Gets the access control policy for a resource. Returns an empty policy if the resource exists
+   * and does not have a policy set.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (MessagingClient messagingClient = MessagingClient.create()) {
+   *   GetIamPolicyRequest request =
+   *       GetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setOptions(GetPolicyOptions.newBuilder().build())
+   *           .build();
+   *   Policy response = messagingClient.getIamPolicy(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final Policy getIamPolicy(GetIamPolicyRequest request) {
+    return getIamPolicyCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Gets the access control policy for a resource. Returns an empty policy if the resource exists
+   * and does not have a policy set.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (MessagingClient messagingClient = MessagingClient.create()) {
+   *   GetIamPolicyRequest request =
+   *       GetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setOptions(GetPolicyOptions.newBuilder().build())
+   *           .build();
+   *   ApiFuture<Policy> future = messagingClient.getIamPolicyCallable().futureCall(request);
+   *   // Do something.
+   *   Policy response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    return stub.getIamPolicyCallable();
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Returns permissions that a caller has on the specified resource. If the resource does not
+   * exist, this will return an empty set of permissions, not a `NOT_FOUND` error.
+   *
+   * <p>Note: This operation is designed to be used for building permission-aware UIs and
+   * command-line tools, not for authorization checking. This operation may "fail open" without
+   * warning.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (MessagingClient messagingClient = MessagingClient.create()) {
+   *   TestIamPermissionsRequest request =
+   *       TestIamPermissionsRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .addAllPermissions(new ArrayList<String>())
+   *           .build();
+   *   TestIamPermissionsResponse response = messagingClient.testIamPermissions(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final TestIamPermissionsResponse testIamPermissions(TestIamPermissionsRequest request) {
+    return testIamPermissionsCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Returns permissions that a caller has on the specified resource. If the resource does not
+   * exist, this will return an empty set of permissions, not a `NOT_FOUND` error.
+   *
+   * <p>Note: This operation is designed to be used for building permission-aware UIs and
+   * command-line tools, not for authorization checking. This operation may "fail open" without
+   * warning.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (MessagingClient messagingClient = MessagingClient.create()) {
+   *   TestIamPermissionsRequest request =
+   *       TestIamPermissionsRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .addAllPermissions(new ArrayList<String>())
+   *           .build();
+   *   ApiFuture<TestIamPermissionsResponse> future =
+   *       messagingClient.testIamPermissionsCallable().futureCall(request);
+   *   // Do something.
+   *   TestIamPermissionsResponse response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    return stub.testIamPermissionsCallable();
+  }
+
   @Override
   public final void close() {
     stub.close();
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/MessagingSettings.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/MessagingSettings.java
index 9b699b6e94..102ec93cd4 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/MessagingSettings.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/MessagingSettings.java
@@ -40,6 +40,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.Operation;
 import com.google.protobuf.Empty;
 import com.google.showcase.v1beta1.stub.MessagingStubSettings;
@@ -177,6 +182,22 @@ public UnaryCallSettings<GetLocationRequest, Location> getLocationSettings() {
     return ((MessagingStubSettings) getStubSettings()).getLocationSettings();
   }
 
+  /** Returns the object with the settings used for calls to setIamPolicy. */
+  public UnaryCallSettings<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+    return ((MessagingStubSettings) getStubSettings()).setIamPolicySettings();
+  }
+
+  /** Returns the object with the settings used for calls to getIamPolicy. */
+  public UnaryCallSettings<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+    return ((MessagingStubSettings) getStubSettings()).getIamPolicySettings();
+  }
+
+  /** Returns the object with the settings used for calls to testIamPermissions. */
+  public UnaryCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsSettings() {
+    return ((MessagingStubSettings) getStubSettings()).testIamPermissionsSettings();
+  }
+
   public static final MessagingSettings create(MessagingStubSettings stub) throws IOException {
     return new MessagingSettings.Builder(stub.toBuilder()).build();
   }
@@ -384,6 +405,22 @@ public UnaryCallSettings.Builder<GetLocationRequest, Location> getLocationSettin
       return getStubSettingsBuilder().getLocationSettings();
     }
 
+    /** Returns the builder for the settings used for calls to setIamPolicy. */
+    public UnaryCallSettings.Builder<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+      return getStubSettingsBuilder().setIamPolicySettings();
+    }
+
+    /** Returns the builder for the settings used for calls to getIamPolicy. */
+    public UnaryCallSettings.Builder<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+      return getStubSettingsBuilder().getIamPolicySettings();
+    }
+
+    /** Returns the builder for the settings used for calls to testIamPermissions. */
+    public UnaryCallSettings.Builder<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsSettings() {
+      return getStubSettingsBuilder().testIamPermissionsSettings();
+    }
+
     @Override
     public MessagingSettings build() throws IOException {
       return new MessagingSettings(this);
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/SequenceServiceClient.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/SequenceServiceClient.java
index 378bc855b3..54faf59462 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/SequenceServiceClient.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/SequenceServiceClient.java
@@ -31,6 +31,11 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.util.concurrent.MoreExecutors;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import com.google.showcase.v1beta1.stub.SequenceServiceStub;
 import com.google.showcase.v1beta1.stub.SequenceServiceStubSettings;
@@ -865,6 +870,209 @@ public final UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     return stub.getLocationCallable();
   }
 
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Sets the access control policy on the specified resource. Replaces any existing policy.
+   *
+   * <p>Can return `NOT_FOUND`, `INVALID_ARGUMENT`, and `PERMISSION_DENIED` errors.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (SequenceServiceClient sequenceServiceClient = SequenceServiceClient.create()) {
+   *   SetIamPolicyRequest request =
+   *       SetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setPolicy(Policy.newBuilder().build())
+   *           .setUpdateMask(FieldMask.newBuilder().build())
+   *           .build();
+   *   Policy response = sequenceServiceClient.setIamPolicy(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final Policy setIamPolicy(SetIamPolicyRequest request) {
+    return setIamPolicyCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Sets the access control policy on the specified resource. Replaces any existing policy.
+   *
+   * <p>Can return `NOT_FOUND`, `INVALID_ARGUMENT`, and `PERMISSION_DENIED` errors.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (SequenceServiceClient sequenceServiceClient = SequenceServiceClient.create()) {
+   *   SetIamPolicyRequest request =
+   *       SetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setPolicy(Policy.newBuilder().build())
+   *           .setUpdateMask(FieldMask.newBuilder().build())
+   *           .build();
+   *   ApiFuture<Policy> future = sequenceServiceClient.setIamPolicyCallable().futureCall(request);
+   *   // Do something.
+   *   Policy response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    return stub.setIamPolicyCallable();
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Gets the access control policy for a resource. Returns an empty policy if the resource exists
+   * and does not have a policy set.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (SequenceServiceClient sequenceServiceClient = SequenceServiceClient.create()) {
+   *   GetIamPolicyRequest request =
+   *       GetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setOptions(GetPolicyOptions.newBuilder().build())
+   *           .build();
+   *   Policy response = sequenceServiceClient.getIamPolicy(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final Policy getIamPolicy(GetIamPolicyRequest request) {
+    return getIamPolicyCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Gets the access control policy for a resource. Returns an empty policy if the resource exists
+   * and does not have a policy set.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (SequenceServiceClient sequenceServiceClient = SequenceServiceClient.create()) {
+   *   GetIamPolicyRequest request =
+   *       GetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setOptions(GetPolicyOptions.newBuilder().build())
+   *           .build();
+   *   ApiFuture<Policy> future = sequenceServiceClient.getIamPolicyCallable().futureCall(request);
+   *   // Do something.
+   *   Policy response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    return stub.getIamPolicyCallable();
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Returns permissions that a caller has on the specified resource. If the resource does not
+   * exist, this will return an empty set of permissions, not a `NOT_FOUND` error.
+   *
+   * <p>Note: This operation is designed to be used for building permission-aware UIs and
+   * command-line tools, not for authorization checking. This operation may "fail open" without
+   * warning.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (SequenceServiceClient sequenceServiceClient = SequenceServiceClient.create()) {
+   *   TestIamPermissionsRequest request =
+   *       TestIamPermissionsRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .addAllPermissions(new ArrayList<String>())
+   *           .build();
+   *   TestIamPermissionsResponse response = sequenceServiceClient.testIamPermissions(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final TestIamPermissionsResponse testIamPermissions(TestIamPermissionsRequest request) {
+    return testIamPermissionsCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Returns permissions that a caller has on the specified resource. If the resource does not
+   * exist, this will return an empty set of permissions, not a `NOT_FOUND` error.
+   *
+   * <p>Note: This operation is designed to be used for building permission-aware UIs and
+   * command-line tools, not for authorization checking. This operation may "fail open" without
+   * warning.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (SequenceServiceClient sequenceServiceClient = SequenceServiceClient.create()) {
+   *   TestIamPermissionsRequest request =
+   *       TestIamPermissionsRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .addAllPermissions(new ArrayList<String>())
+   *           .build();
+   *   ApiFuture<TestIamPermissionsResponse> future =
+   *       sequenceServiceClient.testIamPermissionsCallable().futureCall(request);
+   *   // Do something.
+   *   TestIamPermissionsResponse response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    return stub.testIamPermissionsCallable();
+  }
+
   @Override
   public final void close() {
     stub.close();
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/SequenceServiceSettings.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/SequenceServiceSettings.java
index 4b1de81967..1d14057c11 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/SequenceServiceSettings.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/SequenceServiceSettings.java
@@ -36,6 +36,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import com.google.showcase.v1beta1.stub.SequenceServiceStubSettings;
 import java.io.IOException;
@@ -128,6 +133,22 @@ public UnaryCallSettings<GetLocationRequest, Location> getLocationSettings() {
     return ((SequenceServiceStubSettings) getStubSettings()).getLocationSettings();
   }
 
+  /** Returns the object with the settings used for calls to setIamPolicy. */
+  public UnaryCallSettings<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+    return ((SequenceServiceStubSettings) getStubSettings()).setIamPolicySettings();
+  }
+
+  /** Returns the object with the settings used for calls to getIamPolicy. */
+  public UnaryCallSettings<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+    return ((SequenceServiceStubSettings) getStubSettings()).getIamPolicySettings();
+  }
+
+  /** Returns the object with the settings used for calls to testIamPermissions. */
+  public UnaryCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsSettings() {
+    return ((SequenceServiceStubSettings) getStubSettings()).testIamPermissionsSettings();
+  }
+
   public static final SequenceServiceSettings create(SequenceServiceStubSettings stub)
       throws IOException {
     return new SequenceServiceSettings.Builder(stub.toBuilder()).build();
@@ -290,6 +311,22 @@ public UnaryCallSettings.Builder<GetLocationRequest, Location> getLocationSettin
       return getStubSettingsBuilder().getLocationSettings();
     }
 
+    /** Returns the builder for the settings used for calls to setIamPolicy. */
+    public UnaryCallSettings.Builder<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+      return getStubSettingsBuilder().setIamPolicySettings();
+    }
+
+    /** Returns the builder for the settings used for calls to getIamPolicy. */
+    public UnaryCallSettings.Builder<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+      return getStubSettingsBuilder().getIamPolicySettings();
+    }
+
+    /** Returns the builder for the settings used for calls to testIamPermissions. */
+    public UnaryCallSettings.Builder<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsSettings() {
+      return getStubSettingsBuilder().testIamPermissionsSettings();
+    }
+
     @Override
     public SequenceServiceSettings build() throws IOException {
       return new SequenceServiceSettings(this);
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/TestingClient.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/TestingClient.java
index a0cacc1455..acb13d6b68 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/TestingClient.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/TestingClient.java
@@ -30,6 +30,11 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.util.concurrent.MoreExecutors;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import com.google.showcase.v1beta1.stub.TestingStub;
 import com.google.showcase.v1beta1.stub.TestingStubSettings;
@@ -866,6 +871,209 @@ public final UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     return stub.getLocationCallable();
   }
 
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Sets the access control policy on the specified resource. Replaces any existing policy.
+   *
+   * <p>Can return `NOT_FOUND`, `INVALID_ARGUMENT`, and `PERMISSION_DENIED` errors.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (TestingClient testingClient = TestingClient.create()) {
+   *   SetIamPolicyRequest request =
+   *       SetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setPolicy(Policy.newBuilder().build())
+   *           .setUpdateMask(FieldMask.newBuilder().build())
+   *           .build();
+   *   Policy response = testingClient.setIamPolicy(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final Policy setIamPolicy(SetIamPolicyRequest request) {
+    return setIamPolicyCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Sets the access control policy on the specified resource. Replaces any existing policy.
+   *
+   * <p>Can return `NOT_FOUND`, `INVALID_ARGUMENT`, and `PERMISSION_DENIED` errors.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (TestingClient testingClient = TestingClient.create()) {
+   *   SetIamPolicyRequest request =
+   *       SetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setPolicy(Policy.newBuilder().build())
+   *           .setUpdateMask(FieldMask.newBuilder().build())
+   *           .build();
+   *   ApiFuture<Policy> future = testingClient.setIamPolicyCallable().futureCall(request);
+   *   // Do something.
+   *   Policy response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    return stub.setIamPolicyCallable();
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Gets the access control policy for a resource. Returns an empty policy if the resource exists
+   * and does not have a policy set.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (TestingClient testingClient = TestingClient.create()) {
+   *   GetIamPolicyRequest request =
+   *       GetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setOptions(GetPolicyOptions.newBuilder().build())
+   *           .build();
+   *   Policy response = testingClient.getIamPolicy(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final Policy getIamPolicy(GetIamPolicyRequest request) {
+    return getIamPolicyCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Gets the access control policy for a resource. Returns an empty policy if the resource exists
+   * and does not have a policy set.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (TestingClient testingClient = TestingClient.create()) {
+   *   GetIamPolicyRequest request =
+   *       GetIamPolicyRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .setOptions(GetPolicyOptions.newBuilder().build())
+   *           .build();
+   *   ApiFuture<Policy> future = testingClient.getIamPolicyCallable().futureCall(request);
+   *   // Do something.
+   *   Policy response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    return stub.getIamPolicyCallable();
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Returns permissions that a caller has on the specified resource. If the resource does not
+   * exist, this will return an empty set of permissions, not a `NOT_FOUND` error.
+   *
+   * <p>Note: This operation is designed to be used for building permission-aware UIs and
+   * command-line tools, not for authorization checking. This operation may "fail open" without
+   * warning.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (TestingClient testingClient = TestingClient.create()) {
+   *   TestIamPermissionsRequest request =
+   *       TestIamPermissionsRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .addAllPermissions(new ArrayList<String>())
+   *           .build();
+   *   TestIamPermissionsResponse response = testingClient.testIamPermissions(request);
+   * }
+   * }</pre>
+   *
+   * @param request The request object containing all of the parameters for the API call.
+   * @throws com.google.api.gax.rpc.ApiException if the remote call fails
+   */
+  public final TestIamPermissionsResponse testIamPermissions(TestIamPermissionsRequest request) {
+    return testIamPermissionsCallable().call(request);
+  }
+
+  // AUTO-GENERATED DOCUMENTATION AND METHOD.
+  /**
+   * Returns permissions that a caller has on the specified resource. If the resource does not
+   * exist, this will return an empty set of permissions, not a `NOT_FOUND` error.
+   *
+   * <p>Note: This operation is designed to be used for building permission-aware UIs and
+   * command-line tools, not for authorization checking. This operation may "fail open" without
+   * warning.
+   *
+   * <p>Sample code:
+   *
+   * <pre>{@code
+   * // This snippet has been automatically generated and should be regarded as a code template only.
+   * // It will require modifications to work:
+   * // - It may require correct/in-range values for request initialization.
+   * // - It may require specifying regional endpoints when creating the service client as shown in
+   * // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+   * try (TestingClient testingClient = TestingClient.create()) {
+   *   TestIamPermissionsRequest request =
+   *       TestIamPermissionsRequest.newBuilder()
+   *           .setResource(
+   *               BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+   *                   .toString())
+   *           .addAllPermissions(new ArrayList<String>())
+   *           .build();
+   *   ApiFuture<TestIamPermissionsResponse> future =
+   *       testingClient.testIamPermissionsCallable().futureCall(request);
+   *   // Do something.
+   *   TestIamPermissionsResponse response = future.get();
+   * }
+   * }</pre>
+   */
+  public final UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    return stub.testIamPermissionsCallable();
+  }
+
   @Override
   public final void close() {
     stub.close();
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/TestingSettings.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/TestingSettings.java
index 7fb5f25b5b..7c864ae4eb 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/TestingSettings.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/TestingSettings.java
@@ -37,6 +37,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import com.google.showcase.v1beta1.stub.TestingStubSettings;
 import java.io.IOException;
@@ -136,6 +141,22 @@ public UnaryCallSettings<GetLocationRequest, Location> getLocationSettings() {
     return ((TestingStubSettings) getStubSettings()).getLocationSettings();
   }
 
+  /** Returns the object with the settings used for calls to setIamPolicy. */
+  public UnaryCallSettings<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+    return ((TestingStubSettings) getStubSettings()).setIamPolicySettings();
+  }
+
+  /** Returns the object with the settings used for calls to getIamPolicy. */
+  public UnaryCallSettings<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+    return ((TestingStubSettings) getStubSettings()).getIamPolicySettings();
+  }
+
+  /** Returns the object with the settings used for calls to testIamPermissions. */
+  public UnaryCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsSettings() {
+    return ((TestingStubSettings) getStubSettings()).testIamPermissionsSettings();
+  }
+
   public static final TestingSettings create(TestingStubSettings stub) throws IOException {
     return new TestingSettings.Builder(stub.toBuilder()).build();
   }
@@ -306,6 +327,22 @@ public UnaryCallSettings.Builder<GetLocationRequest, Location> getLocationSettin
       return getStubSettingsBuilder().getLocationSettings();
     }
 
+    /** Returns the builder for the settings used for calls to setIamPolicy. */
+    public UnaryCallSettings.Builder<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+      return getStubSettingsBuilder().setIamPolicySettings();
+    }
+
+    /** Returns the builder for the settings used for calls to getIamPolicy. */
+    public UnaryCallSettings.Builder<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+      return getStubSettingsBuilder().getIamPolicySettings();
+    }
+
+    /** Returns the builder for the settings used for calls to testIamPermissions. */
+    public UnaryCallSettings.Builder<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsSettings() {
+      return getStubSettingsBuilder().testIamPermissionsSettings();
+    }
+
     @Override
     public TestingSettings build() throws IOException {
       return new TestingSettings(this);
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/gapic_metadata.json b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/gapic_metadata.json
index b79bfb905f..3d10c53f8d 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/gapic_metadata.json
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/gapic_metadata.json
@@ -13,6 +13,9 @@
             "GetEnum": {
               "methods": ["getEnum", "getEnumCallable"]
             },
+            "GetIamPolicy": {
+              "methods": ["getIamPolicy", "getIamPolicyCallable"]
+            },
             "GetLocation": {
               "methods": ["getLocation", "getLocationCallable"]
             },
@@ -43,6 +46,12 @@
             "RepeatDataSimplePath": {
               "methods": ["repeatDataSimplePath", "repeatDataSimplePathCallable"]
             },
+            "SetIamPolicy": {
+              "methods": ["setIamPolicy", "setIamPolicyCallable"]
+            },
+            "TestIamPermissions": {
+              "methods": ["testIamPermissions", "testIamPermissionsCallable"]
+            },
             "VerifyEnum": {
               "methods": ["verifyEnum", "verifyEnumCallable"]
             }
@@ -70,6 +79,9 @@
             "Expand": {
               "methods": ["expandCallable"]
             },
+            "GetIamPolicy": {
+              "methods": ["getIamPolicy", "getIamPolicyCallable"]
+            },
             "GetLocation": {
               "methods": ["getLocation", "getLocationCallable"]
             },
@@ -85,6 +97,12 @@
             "PagedExpandLegacyMapped": {
               "methods": ["pagedExpandLegacyMapped", "pagedExpandLegacyMappedPagedCallable", "pagedExpandLegacyMappedCallable"]
             },
+            "SetIamPolicy": {
+              "methods": ["setIamPolicy", "setIamPolicyCallable"]
+            },
+            "TestIamPermissions": {
+              "methods": ["testIamPermissions", "testIamPermissionsCallable"]
+            },
             "Wait": {
               "methods": ["waitAsync", "waitOperationCallable", "waitCallable"]
             }
@@ -103,6 +121,9 @@
             "DeleteUser": {
               "methods": ["deleteUser", "deleteUser", "deleteUser", "deleteUserCallable"]
             },
+            "GetIamPolicy": {
+              "methods": ["getIamPolicy", "getIamPolicyCallable"]
+            },
             "GetLocation": {
               "methods": ["getLocation", "getLocationCallable"]
             },
@@ -115,6 +136,12 @@
             "ListUsers": {
               "methods": ["listUsers", "listUsersPagedCallable", "listUsersCallable"]
             },
+            "SetIamPolicy": {
+              "methods": ["setIamPolicy", "setIamPolicyCallable"]
+            },
+            "TestIamPermissions": {
+              "methods": ["testIamPermissions", "testIamPermissionsCallable"]
+            },
             "UpdateUser": {
               "methods": ["updateUser", "updateUserCallable"]
             }
@@ -145,6 +172,9 @@
             "GetBlurb": {
               "methods": ["getBlurb", "getBlurb", "getBlurb", "getBlurbCallable"]
             },
+            "GetIamPolicy": {
+              "methods": ["getIamPolicy", "getIamPolicyCallable"]
+            },
             "GetLocation": {
               "methods": ["getLocation", "getLocationCallable"]
             },
@@ -166,9 +196,15 @@
             "SendBlurbs": {
               "methods": ["sendBlurbsCallable"]
             },
+            "SetIamPolicy": {
+              "methods": ["setIamPolicy", "setIamPolicyCallable"]
+            },
             "StreamBlurbs": {
               "methods": ["streamBlurbsCallable"]
             },
+            "TestIamPermissions": {
+              "methods": ["testIamPermissions", "testIamPermissionsCallable"]
+            },
             "UpdateBlurb": {
               "methods": ["updateBlurb", "updateBlurbCallable"]
             },
@@ -196,6 +232,9 @@
             "CreateStreamingSequence": {
               "methods": ["createStreamingSequence", "createStreamingSequence", "createStreamingSequenceCallable"]
             },
+            "GetIamPolicy": {
+              "methods": ["getIamPolicy", "getIamPolicyCallable"]
+            },
             "GetLocation": {
               "methods": ["getLocation", "getLocationCallable"]
             },
@@ -207,6 +246,12 @@
             },
             "ListLocations": {
               "methods": ["listLocations", "listLocationsPagedCallable", "listLocationsCallable"]
+            },
+            "SetIamPolicy": {
+              "methods": ["setIamPolicy", "setIamPolicyCallable"]
+            },
+            "TestIamPermissions": {
+              "methods": ["testIamPermissions", "testIamPermissionsCallable"]
             }
           }
         }
@@ -226,6 +271,9 @@
             "DeleteTest": {
               "methods": ["deleteTest", "deleteTestCallable"]
             },
+            "GetIamPolicy": {
+              "methods": ["getIamPolicy", "getIamPolicyCallable"]
+            },
             "GetLocation": {
               "methods": ["getLocation", "getLocationCallable"]
             },
@@ -244,6 +292,12 @@
             "ReportSession": {
               "methods": ["reportSession", "reportSessionCallable"]
             },
+            "SetIamPolicy": {
+              "methods": ["setIamPolicy", "setIamPolicyCallable"]
+            },
+            "TestIamPermissions": {
+              "methods": ["testIamPermissions", "testIamPermissionsCallable"]
+            },
             "VerifyTest": {
               "methods": ["verifyTest", "verifyTestCallable"]
             }
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/ComplianceStub.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/ComplianceStub.java
index 1ad896afb3..033e6024fc 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/ComplianceStub.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/ComplianceStub.java
@@ -25,6 +25,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.showcase.v1beta1.EnumRequest;
 import com.google.showcase.v1beta1.EnumResponse;
 import com.google.showcase.v1beta1.RepeatRequest;
@@ -95,6 +100,19 @@ public UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     throw new UnsupportedOperationException("Not implemented: getLocationCallable()");
   }
 
+  public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    throw new UnsupportedOperationException("Not implemented: setIamPolicyCallable()");
+  }
+
+  public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    throw new UnsupportedOperationException("Not implemented: getIamPolicyCallable()");
+  }
+
+  public UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    throw new UnsupportedOperationException("Not implemented: testIamPermissionsCallable()");
+  }
+
   @Override
   public abstract void close();
 }
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/ComplianceStubSettings.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/ComplianceStubSettings.java
index 6cb3ac63de..2fb7b2745c 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/ComplianceStubSettings.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/ComplianceStubSettings.java
@@ -51,6 +51,11 @@
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.showcase.v1beta1.EnumRequest;
 import com.google.showcase.v1beta1.EnumResponse;
 import com.google.showcase.v1beta1.RepeatRequest;
@@ -117,6 +122,10 @@ public class ComplianceStubSettings extends StubSettings<ComplianceStubSettings>
           ListLocationsRequest, ListLocationsResponse, ListLocationsPagedResponse>
       listLocationsSettings;
   private final UnaryCallSettings<GetLocationRequest, Location> getLocationSettings;
+  private final UnaryCallSettings<SetIamPolicyRequest, Policy> setIamPolicySettings;
+  private final UnaryCallSettings<GetIamPolicyRequest, Policy> getIamPolicySettings;
+  private final UnaryCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsSettings;
 
   private static final PagedListDescriptor<ListLocationsRequest, ListLocationsResponse, Location>
       LIST_LOCATIONS_PAGE_STR_DESC =
@@ -232,6 +241,22 @@ public UnaryCallSettings<GetLocationRequest, Location> getLocationSettings() {
     return getLocationSettings;
   }
 
+  /** Returns the object with the settings used for calls to setIamPolicy. */
+  public UnaryCallSettings<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+    return setIamPolicySettings;
+  }
+
+  /** Returns the object with the settings used for calls to getIamPolicy. */
+  public UnaryCallSettings<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+    return getIamPolicySettings;
+  }
+
+  /** Returns the object with the settings used for calls to testIamPermissions. */
+  public UnaryCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsSettings() {
+    return testIamPermissionsSettings;
+  }
+
   public ComplianceStub createStub() throws IOException {
     if (getTransportChannelProvider()
         .getTransportName()
@@ -351,6 +376,9 @@ protected ComplianceStubSettings(Builder settingsBuilder) throws IOException {
     verifyEnumSettings = settingsBuilder.verifyEnumSettings().build();
     listLocationsSettings = settingsBuilder.listLocationsSettings().build();
     getLocationSettings = settingsBuilder.getLocationSettings().build();
+    setIamPolicySettings = settingsBuilder.setIamPolicySettings().build();
+    getIamPolicySettings = settingsBuilder.getIamPolicySettings().build();
+    testIamPermissionsSettings = settingsBuilder.testIamPermissionsSettings().build();
   }
 
   /** Builder for ComplianceStubSettings. */
@@ -376,6 +404,10 @@ public static class Builder extends StubSettings.Builder<ComplianceStubSettings,
             ListLocationsRequest, ListLocationsResponse, ListLocationsPagedResponse>
         listLocationsSettings;
     private final UnaryCallSettings.Builder<GetLocationRequest, Location> getLocationSettings;
+    private final UnaryCallSettings.Builder<SetIamPolicyRequest, Policy> setIamPolicySettings;
+    private final UnaryCallSettings.Builder<GetIamPolicyRequest, Policy> getIamPolicySettings;
+    private final UnaryCallSettings.Builder<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsSettings;
     private static final ImmutableMap<String, ImmutableSet<StatusCode.Code>>
         RETRYABLE_CODE_DEFINITIONS;
 
@@ -415,6 +447,9 @@ protected Builder(ClientContext clientContext) {
       verifyEnumSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
       listLocationsSettings = PagedCallSettings.newBuilder(LIST_LOCATIONS_PAGE_STR_FACT);
       getLocationSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      setIamPolicySettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      getIamPolicySettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      testIamPermissionsSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
 
       unaryMethodSettingsBuilders =
           ImmutableList.<UnaryCallSettings.Builder<?, ?>>of(
@@ -429,7 +464,10 @@ protected Builder(ClientContext clientContext) {
               getEnumSettings,
               verifyEnumSettings,
               listLocationsSettings,
-              getLocationSettings);
+              getLocationSettings,
+              setIamPolicySettings,
+              getIamPolicySettings,
+              testIamPermissionsSettings);
       initDefaults(this);
     }
 
@@ -449,6 +487,9 @@ protected Builder(ComplianceStubSettings settings) {
       verifyEnumSettings = settings.verifyEnumSettings.toBuilder();
       listLocationsSettings = settings.listLocationsSettings.toBuilder();
       getLocationSettings = settings.getLocationSettings.toBuilder();
+      setIamPolicySettings = settings.setIamPolicySettings.toBuilder();
+      getIamPolicySettings = settings.getIamPolicySettings.toBuilder();
+      testIamPermissionsSettings = settings.testIamPermissionsSettings.toBuilder();
 
       unaryMethodSettingsBuilders =
           ImmutableList.<UnaryCallSettings.Builder<?, ?>>of(
@@ -463,7 +504,10 @@ protected Builder(ComplianceStubSettings settings) {
               getEnumSettings,
               verifyEnumSettings,
               listLocationsSettings,
-              getLocationSettings);
+              getLocationSettings,
+              setIamPolicySettings,
+              getIamPolicySettings,
+              testIamPermissionsSettings);
     }
 
     private static Builder createDefault() {
@@ -553,6 +597,21 @@ private static Builder initDefaults(Builder builder) {
           .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_codes"))
           .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_params"));
 
+      builder
+          .setIamPolicySettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_params"));
+
+      builder
+          .getIamPolicySettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_params"));
+
+      builder
+          .testIamPermissionsSettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_params"));
+
       return builder;
     }
 
@@ -635,6 +694,22 @@ public UnaryCallSettings.Builder<GetLocationRequest, Location> getLocationSettin
       return getLocationSettings;
     }
 
+    /** Returns the builder for the settings used for calls to setIamPolicy. */
+    public UnaryCallSettings.Builder<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+      return setIamPolicySettings;
+    }
+
+    /** Returns the builder for the settings used for calls to getIamPolicy. */
+    public UnaryCallSettings.Builder<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+      return getIamPolicySettings;
+    }
+
+    /** Returns the builder for the settings used for calls to testIamPermissions. */
+    public UnaryCallSettings.Builder<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsSettings() {
+      return testIamPermissionsSettings;
+    }
+
     @Override
     public ComplianceStubSettings build() throws IOException {
       return new ComplianceStubSettings(this);
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/EchoStub.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/EchoStub.java
index 04316a20cf..a2aca8c1a0 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/EchoStub.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/EchoStub.java
@@ -31,6 +31,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import com.google.showcase.v1beta1.BlockRequest;
@@ -129,6 +134,19 @@ public UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     throw new UnsupportedOperationException("Not implemented: getLocationCallable()");
   }
 
+  public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    throw new UnsupportedOperationException("Not implemented: setIamPolicyCallable()");
+  }
+
+  public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    throw new UnsupportedOperationException("Not implemented: getIamPolicyCallable()");
+  }
+
+  public UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    throw new UnsupportedOperationException("Not implemented: testIamPermissionsCallable()");
+  }
+
   @Override
   public abstract void close();
 }
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/EchoStubSettings.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/EchoStubSettings.java
index 8228740686..8e1d7bb5e2 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/EchoStubSettings.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/EchoStubSettings.java
@@ -59,6 +59,11 @@
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.Operation;
 import com.google.showcase.v1beta1.BlockRequest;
 import com.google.showcase.v1beta1.BlockResponse;
@@ -142,6 +147,10 @@ public class EchoStubSettings extends StubSettings<EchoStubSettings> {
           ListLocationsRequest, ListLocationsResponse, ListLocationsPagedResponse>
       listLocationsSettings;
   private final UnaryCallSettings<GetLocationRequest, Location> getLocationSettings;
+  private final UnaryCallSettings<SetIamPolicyRequest, Policy> setIamPolicySettings;
+  private final UnaryCallSettings<GetIamPolicyRequest, Policy> getIamPolicySettings;
+  private final UnaryCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsSettings;
 
   private static final PagedListDescriptor<PagedExpandRequest, PagedExpandResponse, EchoResponse>
       PAGED_EXPAND_PAGE_STR_DESC =
@@ -381,6 +390,22 @@ public UnaryCallSettings<GetLocationRequest, Location> getLocationSettings() {
     return getLocationSettings;
   }
 
+  /** Returns the object with the settings used for calls to setIamPolicy. */
+  public UnaryCallSettings<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+    return setIamPolicySettings;
+  }
+
+  /** Returns the object with the settings used for calls to getIamPolicy. */
+  public UnaryCallSettings<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+    return getIamPolicySettings;
+  }
+
+  /** Returns the object with the settings used for calls to testIamPermissions. */
+  public UnaryCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsSettings() {
+    return testIamPermissionsSettings;
+  }
+
   public EchoStub createStub() throws IOException {
     if (getTransportChannelProvider()
         .getTransportName()
@@ -497,6 +522,9 @@ protected EchoStubSettings(Builder settingsBuilder) throws IOException {
     blockSettings = settingsBuilder.blockSettings().build();
     listLocationsSettings = settingsBuilder.listLocationsSettings().build();
     getLocationSettings = settingsBuilder.getLocationSettings().build();
+    setIamPolicySettings = settingsBuilder.setIamPolicySettings().build();
+    getIamPolicySettings = settingsBuilder.getIamPolicySettings().build();
+    testIamPermissionsSettings = settingsBuilder.testIamPermissionsSettings().build();
   }
 
   /** Builder for EchoStubSettings. */
@@ -524,6 +552,10 @@ public static class Builder extends StubSettings.Builder<EchoStubSettings, Build
             ListLocationsRequest, ListLocationsResponse, ListLocationsPagedResponse>
         listLocationsSettings;
     private final UnaryCallSettings.Builder<GetLocationRequest, Location> getLocationSettings;
+    private final UnaryCallSettings.Builder<SetIamPolicyRequest, Policy> setIamPolicySettings;
+    private final UnaryCallSettings.Builder<GetIamPolicyRequest, Policy> getIamPolicySettings;
+    private final UnaryCallSettings.Builder<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsSettings;
     private static final ImmutableMap<String, ImmutableSet<StatusCode.Code>>
         RETRYABLE_CODE_DEFINITIONS;
 
@@ -587,6 +619,9 @@ protected Builder(ClientContext clientContext) {
       blockSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
       listLocationsSettings = PagedCallSettings.newBuilder(LIST_LOCATIONS_PAGE_STR_FACT);
       getLocationSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      setIamPolicySettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      getIamPolicySettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      testIamPermissionsSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
 
       unaryMethodSettingsBuilders =
           ImmutableList.<UnaryCallSettings.Builder<?, ?>>of(
@@ -597,7 +632,10 @@ protected Builder(ClientContext clientContext) {
               waitSettings,
               blockSettings,
               listLocationsSettings,
-              getLocationSettings);
+              getLocationSettings,
+              setIamPolicySettings,
+              getIamPolicySettings,
+              testIamPermissionsSettings);
       initDefaults(this);
     }
 
@@ -616,6 +654,9 @@ protected Builder(EchoStubSettings settings) {
       blockSettings = settings.blockSettings.toBuilder();
       listLocationsSettings = settings.listLocationsSettings.toBuilder();
       getLocationSettings = settings.getLocationSettings.toBuilder();
+      setIamPolicySettings = settings.setIamPolicySettings.toBuilder();
+      getIamPolicySettings = settings.getIamPolicySettings.toBuilder();
+      testIamPermissionsSettings = settings.testIamPermissionsSettings.toBuilder();
 
       unaryMethodSettingsBuilders =
           ImmutableList.<UnaryCallSettings.Builder<?, ?>>of(
@@ -626,7 +667,10 @@ protected Builder(EchoStubSettings settings) {
               waitSettings,
               blockSettings,
               listLocationsSettings,
-              getLocationSettings);
+              getLocationSettings,
+              setIamPolicySettings,
+              getIamPolicySettings,
+              testIamPermissionsSettings);
     }
 
     private static Builder createDefault() {
@@ -701,6 +745,21 @@ private static Builder initDefaults(Builder builder) {
           .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_0_codes"))
           .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_0_params"));
 
+      builder
+          .setIamPolicySettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_0_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_0_params"));
+
+      builder
+          .getIamPolicySettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_0_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_0_params"));
+
+      builder
+          .testIamPermissionsSettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_0_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_0_params"));
+
       builder
           .waitOperationSettings()
           .setInitialCallSettings(
@@ -814,6 +873,22 @@ public UnaryCallSettings.Builder<GetLocationRequest, Location> getLocationSettin
       return getLocationSettings;
     }
 
+    /** Returns the builder for the settings used for calls to setIamPolicy. */
+    public UnaryCallSettings.Builder<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+      return setIamPolicySettings;
+    }
+
+    /** Returns the builder for the settings used for calls to getIamPolicy. */
+    public UnaryCallSettings.Builder<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+      return getIamPolicySettings;
+    }
+
+    /** Returns the builder for the settings used for calls to testIamPermissions. */
+    public UnaryCallSettings.Builder<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsSettings() {
+      return testIamPermissionsSettings;
+    }
+
     @Override
     public EchoStubSettings build() throws IOException {
       return new EchoStubSettings(this);
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcComplianceStub.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcComplianceStub.java
index c6dcf25bf3..876e5f3eef 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcComplianceStub.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcComplianceStub.java
@@ -30,6 +30,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.stub.GrpcOperationsStub;
 import com.google.showcase.v1beta1.EnumRequest;
 import com.google.showcase.v1beta1.EnumResponse;
@@ -159,6 +164,33 @@ public class GrpcComplianceStub extends ComplianceStub {
           .setResponseMarshaller(ProtoUtils.marshaller(Location.getDefaultInstance()))
           .build();
 
+  private static final MethodDescriptor<SetIamPolicyRequest, Policy> setIamPolicyMethodDescriptor =
+      MethodDescriptor.<SetIamPolicyRequest, Policy>newBuilder()
+          .setType(MethodDescriptor.MethodType.UNARY)
+          .setFullMethodName("google.iam.v1.IAMPolicy/SetIamPolicy")
+          .setRequestMarshaller(ProtoUtils.marshaller(SetIamPolicyRequest.getDefaultInstance()))
+          .setResponseMarshaller(ProtoUtils.marshaller(Policy.getDefaultInstance()))
+          .build();
+
+  private static final MethodDescriptor<GetIamPolicyRequest, Policy> getIamPolicyMethodDescriptor =
+      MethodDescriptor.<GetIamPolicyRequest, Policy>newBuilder()
+          .setType(MethodDescriptor.MethodType.UNARY)
+          .setFullMethodName("google.iam.v1.IAMPolicy/GetIamPolicy")
+          .setRequestMarshaller(ProtoUtils.marshaller(GetIamPolicyRequest.getDefaultInstance()))
+          .setResponseMarshaller(ProtoUtils.marshaller(Policy.getDefaultInstance()))
+          .build();
+
+  private static final MethodDescriptor<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsMethodDescriptor =
+          MethodDescriptor.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+              .setType(MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName("google.iam.v1.IAMPolicy/TestIamPermissions")
+              .setRequestMarshaller(
+                  ProtoUtils.marshaller(TestIamPermissionsRequest.getDefaultInstance()))
+              .setResponseMarshaller(
+                  ProtoUtils.marshaller(TestIamPermissionsResponse.getDefaultInstance()))
+              .build();
+
   private final UnaryCallable<RepeatRequest, RepeatResponse> repeatDataBodyCallable;
   private final UnaryCallable<RepeatRequest, RepeatResponse> repeatDataBodyInfoCallable;
   private final UnaryCallable<RepeatRequest, RepeatResponse> repeatDataQueryCallable;
@@ -173,6 +205,10 @@ public class GrpcComplianceStub extends ComplianceStub {
   private final UnaryCallable<ListLocationsRequest, ListLocationsPagedResponse>
       listLocationsPagedCallable;
   private final UnaryCallable<GetLocationRequest, Location> getLocationCallable;
+  private final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable;
+  private final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable;
+  private final UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable;
 
   private final BackgroundResource backgroundResources;
   private final GrpcOperationsStub operationsStub;
@@ -306,6 +342,37 @@ protected GrpcComplianceStub(
                   return builder.build();
                 })
             .build();
+    GrpcCallSettings<SetIamPolicyRequest, Policy> setIamPolicyTransportSettings =
+        GrpcCallSettings.<SetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(setIamPolicyMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    GrpcCallSettings<GetIamPolicyRequest, Policy> getIamPolicyTransportSettings =
+        GrpcCallSettings.<GetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(getIamPolicyMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    GrpcCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsTransportSettings =
+            GrpcCallSettings.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+                .setMethodDescriptor(testIamPermissionsMethodDescriptor)
+                .setParamsExtractor(
+                    request -> {
+                      RequestParamsBuilder builder = RequestParamsBuilder.create();
+                      builder.add("resource", String.valueOf(request.getResource()));
+                      return builder.build();
+                    })
+                .build();
 
     this.repeatDataBodyCallable =
         callableFactory.createUnaryCallable(
@@ -358,6 +425,17 @@ protected GrpcComplianceStub(
     this.getLocationCallable =
         callableFactory.createUnaryCallable(
             getLocationTransportSettings, settings.getLocationSettings(), clientContext);
+    this.setIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            setIamPolicyTransportSettings, settings.setIamPolicySettings(), clientContext);
+    this.getIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            getIamPolicyTransportSettings, settings.getIamPolicySettings(), clientContext);
+    this.testIamPermissionsCallable =
+        callableFactory.createUnaryCallable(
+            testIamPermissionsTransportSettings,
+            settings.testIamPermissionsSettings(),
+            clientContext);
 
     this.backgroundResources =
         new BackgroundResourceAggregation(clientContext.getBackgroundResources());
@@ -433,6 +511,22 @@ public UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     return getLocationCallable;
   }
 
+  @Override
+  public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    return setIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    return getIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    return testIamPermissionsCallable;
+  }
+
   @Override
   public final void close() {
     try {
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcEchoStub.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcEchoStub.java
index 36c6e630d5..fdaf681056 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcEchoStub.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcEchoStub.java
@@ -37,6 +37,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.GrpcOperationsStub;
 import com.google.showcase.v1beta1.BlockRequest;
@@ -165,6 +170,33 @@ public class GrpcEchoStub extends EchoStub {
           .setResponseMarshaller(ProtoUtils.marshaller(Location.getDefaultInstance()))
           .build();
 
+  private static final MethodDescriptor<SetIamPolicyRequest, Policy> setIamPolicyMethodDescriptor =
+      MethodDescriptor.<SetIamPolicyRequest, Policy>newBuilder()
+          .setType(MethodDescriptor.MethodType.UNARY)
+          .setFullMethodName("google.iam.v1.IAMPolicy/SetIamPolicy")
+          .setRequestMarshaller(ProtoUtils.marshaller(SetIamPolicyRequest.getDefaultInstance()))
+          .setResponseMarshaller(ProtoUtils.marshaller(Policy.getDefaultInstance()))
+          .build();
+
+  private static final MethodDescriptor<GetIamPolicyRequest, Policy> getIamPolicyMethodDescriptor =
+      MethodDescriptor.<GetIamPolicyRequest, Policy>newBuilder()
+          .setType(MethodDescriptor.MethodType.UNARY)
+          .setFullMethodName("google.iam.v1.IAMPolicy/GetIamPolicy")
+          .setRequestMarshaller(ProtoUtils.marshaller(GetIamPolicyRequest.getDefaultInstance()))
+          .setResponseMarshaller(ProtoUtils.marshaller(Policy.getDefaultInstance()))
+          .build();
+
+  private static final MethodDescriptor<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsMethodDescriptor =
+          MethodDescriptor.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+              .setType(MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName("google.iam.v1.IAMPolicy/TestIamPermissions")
+              .setRequestMarshaller(
+                  ProtoUtils.marshaller(TestIamPermissionsRequest.getDefaultInstance()))
+              .setResponseMarshaller(
+                  ProtoUtils.marshaller(TestIamPermissionsResponse.getDefaultInstance()))
+              .build();
+
   private final UnaryCallable<EchoRequest, EchoResponse> echoCallable;
   private final ServerStreamingCallable<ExpandRequest, EchoResponse> expandCallable;
   private final ClientStreamingCallable<EchoRequest, EchoResponse> collectCallable;
@@ -185,6 +217,10 @@ public class GrpcEchoStub extends EchoStub {
   private final UnaryCallable<ListLocationsRequest, ListLocationsPagedResponse>
       listLocationsPagedCallable;
   private final UnaryCallable<GetLocationRequest, Location> getLocationCallable;
+  private final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable;
+  private final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable;
+  private final UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable;
 
   private final BackgroundResource backgroundResources;
   private final GrpcOperationsStub operationsStub;
@@ -309,6 +345,37 @@ protected GrpcEchoStub(
                   return builder.build();
                 })
             .build();
+    GrpcCallSettings<SetIamPolicyRequest, Policy> setIamPolicyTransportSettings =
+        GrpcCallSettings.<SetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(setIamPolicyMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    GrpcCallSettings<GetIamPolicyRequest, Policy> getIamPolicyTransportSettings =
+        GrpcCallSettings.<GetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(getIamPolicyMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    GrpcCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsTransportSettings =
+            GrpcCallSettings.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+                .setMethodDescriptor(testIamPermissionsMethodDescriptor)
+                .setParamsExtractor(
+                    request -> {
+                      RequestParamsBuilder builder = RequestParamsBuilder.create();
+                      builder.add("resource", String.valueOf(request.getResource()));
+                      return builder.build();
+                    })
+                .build();
 
     this.echoCallable =
         callableFactory.createUnaryCallable(
@@ -361,6 +428,17 @@ protected GrpcEchoStub(
     this.getLocationCallable =
         callableFactory.createUnaryCallable(
             getLocationTransportSettings, settings.getLocationSettings(), clientContext);
+    this.setIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            setIamPolicyTransportSettings, settings.setIamPolicySettings(), clientContext);
+    this.getIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            getIamPolicyTransportSettings, settings.getIamPolicySettings(), clientContext);
+    this.testIamPermissionsCallable =
+        callableFactory.createUnaryCallable(
+            testIamPermissionsTransportSettings,
+            settings.testIamPermissionsSettings(),
+            clientContext);
 
     this.backgroundResources =
         new BackgroundResourceAggregation(clientContext.getBackgroundResources());
@@ -448,6 +526,22 @@ public UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     return getLocationCallable;
   }
 
+  @Override
+  public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    return setIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    return getIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    return testIamPermissionsCallable;
+  }
+
   @Override
   public final void close() {
     try {
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcIdentityStub.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcIdentityStub.java
index 1e2c7c0b4c..facfb04c0d 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcIdentityStub.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcIdentityStub.java
@@ -31,6 +31,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.stub.GrpcOperationsStub;
 import com.google.protobuf.Empty;
 import com.google.showcase.v1beta1.CreateUserRequest;
@@ -116,6 +121,33 @@ public class GrpcIdentityStub extends IdentityStub {
           .setResponseMarshaller(ProtoUtils.marshaller(Location.getDefaultInstance()))
           .build();
 
+  private static final MethodDescriptor<SetIamPolicyRequest, Policy> setIamPolicyMethodDescriptor =
+      MethodDescriptor.<SetIamPolicyRequest, Policy>newBuilder()
+          .setType(MethodDescriptor.MethodType.UNARY)
+          .setFullMethodName("google.iam.v1.IAMPolicy/SetIamPolicy")
+          .setRequestMarshaller(ProtoUtils.marshaller(SetIamPolicyRequest.getDefaultInstance()))
+          .setResponseMarshaller(ProtoUtils.marshaller(Policy.getDefaultInstance()))
+          .build();
+
+  private static final MethodDescriptor<GetIamPolicyRequest, Policy> getIamPolicyMethodDescriptor =
+      MethodDescriptor.<GetIamPolicyRequest, Policy>newBuilder()
+          .setType(MethodDescriptor.MethodType.UNARY)
+          .setFullMethodName("google.iam.v1.IAMPolicy/GetIamPolicy")
+          .setRequestMarshaller(ProtoUtils.marshaller(GetIamPolicyRequest.getDefaultInstance()))
+          .setResponseMarshaller(ProtoUtils.marshaller(Policy.getDefaultInstance()))
+          .build();
+
+  private static final MethodDescriptor<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsMethodDescriptor =
+          MethodDescriptor.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+              .setType(MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName("google.iam.v1.IAMPolicy/TestIamPermissions")
+              .setRequestMarshaller(
+                  ProtoUtils.marshaller(TestIamPermissionsRequest.getDefaultInstance()))
+              .setResponseMarshaller(
+                  ProtoUtils.marshaller(TestIamPermissionsResponse.getDefaultInstance()))
+              .build();
+
   private final UnaryCallable<CreateUserRequest, User> createUserCallable;
   private final UnaryCallable<GetUserRequest, User> getUserCallable;
   private final UnaryCallable<UpdateUserRequest, User> updateUserCallable;
@@ -126,6 +158,10 @@ public class GrpcIdentityStub extends IdentityStub {
   private final UnaryCallable<ListLocationsRequest, ListLocationsPagedResponse>
       listLocationsPagedCallable;
   private final UnaryCallable<GetLocationRequest, Location> getLocationCallable;
+  private final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable;
+  private final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable;
+  private final UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable;
 
   private final BackgroundResource backgroundResources;
   private final GrpcOperationsStub operationsStub;
@@ -224,6 +260,37 @@ protected GrpcIdentityStub(
                   return builder.build();
                 })
             .build();
+    GrpcCallSettings<SetIamPolicyRequest, Policy> setIamPolicyTransportSettings =
+        GrpcCallSettings.<SetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(setIamPolicyMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    GrpcCallSettings<GetIamPolicyRequest, Policy> getIamPolicyTransportSettings =
+        GrpcCallSettings.<GetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(getIamPolicyMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    GrpcCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsTransportSettings =
+            GrpcCallSettings.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+                .setMethodDescriptor(testIamPermissionsMethodDescriptor)
+                .setParamsExtractor(
+                    request -> {
+                      RequestParamsBuilder builder = RequestParamsBuilder.create();
+                      builder.add("resource", String.valueOf(request.getResource()));
+                      return builder.build();
+                    })
+                .build();
 
     this.createUserCallable =
         callableFactory.createUnaryCallable(
@@ -252,6 +319,17 @@ protected GrpcIdentityStub(
     this.getLocationCallable =
         callableFactory.createUnaryCallable(
             getLocationTransportSettings, settings.getLocationSettings(), clientContext);
+    this.setIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            setIamPolicyTransportSettings, settings.setIamPolicySettings(), clientContext);
+    this.getIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            getIamPolicyTransportSettings, settings.getIamPolicySettings(), clientContext);
+    this.testIamPermissionsCallable =
+        callableFactory.createUnaryCallable(
+            testIamPermissionsTransportSettings,
+            settings.testIamPermissionsSettings(),
+            clientContext);
 
     this.backgroundResources =
         new BackgroundResourceAggregation(clientContext.getBackgroundResources());
@@ -307,6 +385,22 @@ public UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     return getLocationCallable;
   }
 
+  @Override
+  public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    return setIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    return getIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    return testIamPermissionsCallable;
+  }
+
   @Override
   public final void close() {
     try {
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcMessagingStub.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcMessagingStub.java
index 52bc2b8c36..8846164182 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcMessagingStub.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcMessagingStub.java
@@ -36,6 +36,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.GrpcOperationsStub;
 import com.google.protobuf.Empty;
@@ -215,6 +220,33 @@ public class GrpcMessagingStub extends MessagingStub {
           .setResponseMarshaller(ProtoUtils.marshaller(Location.getDefaultInstance()))
           .build();
 
+  private static final MethodDescriptor<SetIamPolicyRequest, Policy> setIamPolicyMethodDescriptor =
+      MethodDescriptor.<SetIamPolicyRequest, Policy>newBuilder()
+          .setType(MethodDescriptor.MethodType.UNARY)
+          .setFullMethodName("google.iam.v1.IAMPolicy/SetIamPolicy")
+          .setRequestMarshaller(ProtoUtils.marshaller(SetIamPolicyRequest.getDefaultInstance()))
+          .setResponseMarshaller(ProtoUtils.marshaller(Policy.getDefaultInstance()))
+          .build();
+
+  private static final MethodDescriptor<GetIamPolicyRequest, Policy> getIamPolicyMethodDescriptor =
+      MethodDescriptor.<GetIamPolicyRequest, Policy>newBuilder()
+          .setType(MethodDescriptor.MethodType.UNARY)
+          .setFullMethodName("google.iam.v1.IAMPolicy/GetIamPolicy")
+          .setRequestMarshaller(ProtoUtils.marshaller(GetIamPolicyRequest.getDefaultInstance()))
+          .setResponseMarshaller(ProtoUtils.marshaller(Policy.getDefaultInstance()))
+          .build();
+
+  private static final MethodDescriptor<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsMethodDescriptor =
+          MethodDescriptor.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+              .setType(MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName("google.iam.v1.IAMPolicy/TestIamPermissions")
+              .setRequestMarshaller(
+                  ProtoUtils.marshaller(TestIamPermissionsRequest.getDefaultInstance()))
+              .setResponseMarshaller(
+                  ProtoUtils.marshaller(TestIamPermissionsResponse.getDefaultInstance()))
+              .build();
+
   private final UnaryCallable<CreateRoomRequest, Room> createRoomCallable;
   private final UnaryCallable<GetRoomRequest, Room> getRoomCallable;
   private final UnaryCallable<UpdateRoomRequest, Room> updateRoomCallable;
@@ -238,6 +270,10 @@ public class GrpcMessagingStub extends MessagingStub {
   private final UnaryCallable<ListLocationsRequest, ListLocationsPagedResponse>
       listLocationsPagedCallable;
   private final UnaryCallable<GetLocationRequest, Location> getLocationCallable;
+  private final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable;
+  private final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable;
+  private final UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable;
 
   private final BackgroundResource backgroundResources;
   private final GrpcOperationsStub operationsStub;
@@ -422,6 +458,37 @@ protected GrpcMessagingStub(
                   return builder.build();
                 })
             .build();
+    GrpcCallSettings<SetIamPolicyRequest, Policy> setIamPolicyTransportSettings =
+        GrpcCallSettings.<SetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(setIamPolicyMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    GrpcCallSettings<GetIamPolicyRequest, Policy> getIamPolicyTransportSettings =
+        GrpcCallSettings.<GetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(getIamPolicyMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    GrpcCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsTransportSettings =
+            GrpcCallSettings.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+                .setMethodDescriptor(testIamPermissionsMethodDescriptor)
+                .setParamsExtractor(
+                    request -> {
+                      RequestParamsBuilder builder = RequestParamsBuilder.create();
+                      builder.add("resource", String.valueOf(request.getResource()));
+                      return builder.build();
+                    })
+                .build();
 
     this.createRoomCallable =
         callableFactory.createUnaryCallable(
@@ -486,6 +553,17 @@ protected GrpcMessagingStub(
     this.getLocationCallable =
         callableFactory.createUnaryCallable(
             getLocationTransportSettings, settings.getLocationSettings(), clientContext);
+    this.setIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            setIamPolicyTransportSettings, settings.setIamPolicySettings(), clientContext);
+    this.getIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            getIamPolicyTransportSettings, settings.getIamPolicySettings(), clientContext);
+    this.testIamPermissionsCallable =
+        callableFactory.createUnaryCallable(
+            testIamPermissionsTransportSettings,
+            settings.testIamPermissionsSettings(),
+            clientContext);
 
     this.backgroundResources =
         new BackgroundResourceAggregation(clientContext.getBackgroundResources());
@@ -597,6 +675,22 @@ public UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     return getLocationCallable;
   }
 
+  @Override
+  public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    return setIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    return getIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    return testIamPermissionsCallable;
+  }
+
   @Override
   public final void close() {
     try {
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcSequenceServiceStub.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcSequenceServiceStub.java
index e2c47d1117..422fada24a 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcSequenceServiceStub.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcSequenceServiceStub.java
@@ -31,6 +31,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.stub.GrpcOperationsStub;
 import com.google.protobuf.Empty;
 import com.google.showcase.v1beta1.AttemptSequenceRequest;
@@ -144,6 +149,33 @@ public class GrpcSequenceServiceStub extends SequenceServiceStub {
           .setResponseMarshaller(ProtoUtils.marshaller(Location.getDefaultInstance()))
           .build();
 
+  private static final MethodDescriptor<SetIamPolicyRequest, Policy> setIamPolicyMethodDescriptor =
+      MethodDescriptor.<SetIamPolicyRequest, Policy>newBuilder()
+          .setType(MethodDescriptor.MethodType.UNARY)
+          .setFullMethodName("google.iam.v1.IAMPolicy/SetIamPolicy")
+          .setRequestMarshaller(ProtoUtils.marshaller(SetIamPolicyRequest.getDefaultInstance()))
+          .setResponseMarshaller(ProtoUtils.marshaller(Policy.getDefaultInstance()))
+          .build();
+
+  private static final MethodDescriptor<GetIamPolicyRequest, Policy> getIamPolicyMethodDescriptor =
+      MethodDescriptor.<GetIamPolicyRequest, Policy>newBuilder()
+          .setType(MethodDescriptor.MethodType.UNARY)
+          .setFullMethodName("google.iam.v1.IAMPolicy/GetIamPolicy")
+          .setRequestMarshaller(ProtoUtils.marshaller(GetIamPolicyRequest.getDefaultInstance()))
+          .setResponseMarshaller(ProtoUtils.marshaller(Policy.getDefaultInstance()))
+          .build();
+
+  private static final MethodDescriptor<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsMethodDescriptor =
+          MethodDescriptor.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+              .setType(MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName("google.iam.v1.IAMPolicy/TestIamPermissions")
+              .setRequestMarshaller(
+                  ProtoUtils.marshaller(TestIamPermissionsRequest.getDefaultInstance()))
+              .setResponseMarshaller(
+                  ProtoUtils.marshaller(TestIamPermissionsResponse.getDefaultInstance()))
+              .build();
+
   private final UnaryCallable<CreateSequenceRequest, Sequence> createSequenceCallable;
   private final UnaryCallable<CreateStreamingSequenceRequest, StreamingSequence>
       createStreamingSequenceCallable;
@@ -158,6 +190,10 @@ public class GrpcSequenceServiceStub extends SequenceServiceStub {
   private final UnaryCallable<ListLocationsRequest, ListLocationsPagedResponse>
       listLocationsPagedCallable;
   private final UnaryCallable<GetLocationRequest, Location> getLocationCallable;
+  private final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable;
+  private final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable;
+  private final UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable;
 
   private final BackgroundResource backgroundResources;
   private final GrpcOperationsStub operationsStub;
@@ -276,6 +312,37 @@ protected GrpcSequenceServiceStub(
                   return builder.build();
                 })
             .build();
+    GrpcCallSettings<SetIamPolicyRequest, Policy> setIamPolicyTransportSettings =
+        GrpcCallSettings.<SetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(setIamPolicyMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    GrpcCallSettings<GetIamPolicyRequest, Policy> getIamPolicyTransportSettings =
+        GrpcCallSettings.<GetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(getIamPolicyMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    GrpcCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsTransportSettings =
+            GrpcCallSettings.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+                .setMethodDescriptor(testIamPermissionsMethodDescriptor)
+                .setParamsExtractor(
+                    request -> {
+                      RequestParamsBuilder builder = RequestParamsBuilder.create();
+                      builder.add("resource", String.valueOf(request.getResource()));
+                      return builder.build();
+                    })
+                .build();
 
     this.createSequenceCallable =
         callableFactory.createUnaryCallable(
@@ -312,6 +379,17 @@ protected GrpcSequenceServiceStub(
     this.getLocationCallable =
         callableFactory.createUnaryCallable(
             getLocationTransportSettings, settings.getLocationSettings(), clientContext);
+    this.setIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            setIamPolicyTransportSettings, settings.setIamPolicySettings(), clientContext);
+    this.getIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            getIamPolicyTransportSettings, settings.getIamPolicySettings(), clientContext);
+    this.testIamPermissionsCallable =
+        callableFactory.createUnaryCallable(
+            testIamPermissionsTransportSettings,
+            settings.testIamPermissionsSettings(),
+            clientContext);
 
     this.backgroundResources =
         new BackgroundResourceAggregation(clientContext.getBackgroundResources());
@@ -370,6 +448,22 @@ public UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     return getLocationCallable;
   }
 
+  @Override
+  public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    return setIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    return getIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    return testIamPermissionsCallable;
+  }
+
   @Override
   public final void close() {
     try {
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcTestingStub.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcTestingStub.java
index fb4f36ca08..c1df2142d2 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcTestingStub.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/GrpcTestingStub.java
@@ -32,6 +32,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.stub.GrpcOperationsStub;
 import com.google.protobuf.Empty;
 import com.google.showcase.v1beta1.CreateSessionRequest;
@@ -155,6 +160,33 @@ public class GrpcTestingStub extends TestingStub {
           .setResponseMarshaller(ProtoUtils.marshaller(Location.getDefaultInstance()))
           .build();
 
+  private static final MethodDescriptor<SetIamPolicyRequest, Policy> setIamPolicyMethodDescriptor =
+      MethodDescriptor.<SetIamPolicyRequest, Policy>newBuilder()
+          .setType(MethodDescriptor.MethodType.UNARY)
+          .setFullMethodName("google.iam.v1.IAMPolicy/SetIamPolicy")
+          .setRequestMarshaller(ProtoUtils.marshaller(SetIamPolicyRequest.getDefaultInstance()))
+          .setResponseMarshaller(ProtoUtils.marshaller(Policy.getDefaultInstance()))
+          .build();
+
+  private static final MethodDescriptor<GetIamPolicyRequest, Policy> getIamPolicyMethodDescriptor =
+      MethodDescriptor.<GetIamPolicyRequest, Policy>newBuilder()
+          .setType(MethodDescriptor.MethodType.UNARY)
+          .setFullMethodName("google.iam.v1.IAMPolicy/GetIamPolicy")
+          .setRequestMarshaller(ProtoUtils.marshaller(GetIamPolicyRequest.getDefaultInstance()))
+          .setResponseMarshaller(ProtoUtils.marshaller(Policy.getDefaultInstance()))
+          .build();
+
+  private static final MethodDescriptor<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsMethodDescriptor =
+          MethodDescriptor.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+              .setType(MethodDescriptor.MethodType.UNARY)
+              .setFullMethodName("google.iam.v1.IAMPolicy/TestIamPermissions")
+              .setRequestMarshaller(
+                  ProtoUtils.marshaller(TestIamPermissionsRequest.getDefaultInstance()))
+              .setResponseMarshaller(
+                  ProtoUtils.marshaller(TestIamPermissionsResponse.getDefaultInstance()))
+              .build();
+
   private final UnaryCallable<CreateSessionRequest, Session> createSessionCallable;
   private final UnaryCallable<GetSessionRequest, Session> getSessionCallable;
   private final UnaryCallable<ListSessionsRequest, ListSessionsResponse> listSessionsCallable;
@@ -170,6 +202,10 @@ public class GrpcTestingStub extends TestingStub {
   private final UnaryCallable<ListLocationsRequest, ListLocationsPagedResponse>
       listLocationsPagedCallable;
   private final UnaryCallable<GetLocationRequest, Location> getLocationCallable;
+  private final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable;
+  private final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable;
+  private final UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable;
 
   private final BackgroundResource backgroundResources;
   private final GrpcOperationsStub operationsStub;
@@ -298,6 +334,37 @@ protected GrpcTestingStub(
                   return builder.build();
                 })
             .build();
+    GrpcCallSettings<SetIamPolicyRequest, Policy> setIamPolicyTransportSettings =
+        GrpcCallSettings.<SetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(setIamPolicyMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    GrpcCallSettings<GetIamPolicyRequest, Policy> getIamPolicyTransportSettings =
+        GrpcCallSettings.<GetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(getIamPolicyMethodDescriptor)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    GrpcCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsTransportSettings =
+            GrpcCallSettings.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+                .setMethodDescriptor(testIamPermissionsMethodDescriptor)
+                .setParamsExtractor(
+                    request -> {
+                      RequestParamsBuilder builder = RequestParamsBuilder.create();
+                      builder.add("resource", String.valueOf(request.getResource()));
+                      return builder.build();
+                    })
+                .build();
 
     this.createSessionCallable =
         callableFactory.createUnaryCallable(
@@ -338,6 +405,17 @@ protected GrpcTestingStub(
     this.getLocationCallable =
         callableFactory.createUnaryCallable(
             getLocationTransportSettings, settings.getLocationSettings(), clientContext);
+    this.setIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            setIamPolicyTransportSettings, settings.setIamPolicySettings(), clientContext);
+    this.getIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            getIamPolicyTransportSettings, settings.getIamPolicySettings(), clientContext);
+    this.testIamPermissionsCallable =
+        callableFactory.createUnaryCallable(
+            testIamPermissionsTransportSettings,
+            settings.testIamPermissionsSettings(),
+            clientContext);
 
     this.backgroundResources =
         new BackgroundResourceAggregation(clientContext.getBackgroundResources());
@@ -413,6 +491,22 @@ public UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     return getLocationCallable;
   }
 
+  @Override
+  public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    return setIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    return getIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    return testIamPermissionsCallable;
+  }
+
   @Override
   public final void close() {
     try {
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonComplianceStub.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonComplianceStub.java
index d03d9ee917..9fe85b496f 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonComplianceStub.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonComplianceStub.java
@@ -35,6 +35,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.TypeRegistry;
 import com.google.showcase.v1beta1.EnumRequest;
 import com.google.showcase.v1beta1.EnumResponse;
@@ -579,6 +584,123 @@ public class HttpJsonComplianceStub extends ComplianceStub {
                       .build())
               .build();
 
+  private static final ApiMethodDescriptor<SetIamPolicyRequest, Policy>
+      setIamPolicyMethodDescriptor =
+          ApiMethodDescriptor.<SetIamPolicyRequest, Policy>newBuilder()
+              .setFullMethodName("google.iam.v1.IAMPolicy/SetIamPolicy")
+              .setHttpMethod("POST")
+              .setType(ApiMethodDescriptor.MethodType.UNARY)
+              .setRequestFormatter(
+                  ProtoMessageRequestFormatter.<SetIamPolicyRequest>newBuilder()
+                      .setPath(
+                          "/v1beta1/{resource=users/*}:setIamPolicy",
+                          request -> {
+                            Map<String, String> fields = new HashMap<>();
+                            ProtoRestSerializer<SetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            serializer.putPathParam(fields, "resource", request.getResource());
+                            return fields;
+                          })
+                      .setAdditionalPaths(
+                          "/v1beta1/{resource=rooms/*}:setIamPolicy",
+                          "/v1beta1/{resource=rooms/*/blurbs/*}:setIamPolicy",
+                          "/v1beta1/{resource=sequences/*}:setIamPolicy")
+                      .setQueryParamsExtractor(
+                          request -> {
+                            Map<String, List<String>> fields = new HashMap<>();
+                            ProtoRestSerializer<SetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            return fields;
+                          })
+                      .setRequestBodyExtractor(
+                          request ->
+                              ProtoRestSerializer.create()
+                                  .toBody("*", request.toBuilder().clearResource().build(), false))
+                      .build())
+              .setResponseParser(
+                  ProtoMessageResponseParser.<Policy>newBuilder()
+                      .setDefaultInstance(Policy.getDefaultInstance())
+                      .setDefaultTypeRegistry(typeRegistry)
+                      .build())
+              .build();
+
+  private static final ApiMethodDescriptor<GetIamPolicyRequest, Policy>
+      getIamPolicyMethodDescriptor =
+          ApiMethodDescriptor.<GetIamPolicyRequest, Policy>newBuilder()
+              .setFullMethodName("google.iam.v1.IAMPolicy/GetIamPolicy")
+              .setHttpMethod("GET")
+              .setType(ApiMethodDescriptor.MethodType.UNARY)
+              .setRequestFormatter(
+                  ProtoMessageRequestFormatter.<GetIamPolicyRequest>newBuilder()
+                      .setPath(
+                          "/v1beta1/{resource=users/*}:getIamPolicy",
+                          request -> {
+                            Map<String, String> fields = new HashMap<>();
+                            ProtoRestSerializer<GetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            serializer.putPathParam(fields, "resource", request.getResource());
+                            return fields;
+                          })
+                      .setAdditionalPaths(
+                          "/v1beta1/{resource=rooms/*}:getIamPolicy",
+                          "/v1beta1/{resource=rooms/*/blurbs/*}:getIamPolicy",
+                          "/v1beta1/{resource=sequences/*}:getIamPolicy")
+                      .setQueryParamsExtractor(
+                          request -> {
+                            Map<String, List<String>> fields = new HashMap<>();
+                            ProtoRestSerializer<GetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            return fields;
+                          })
+                      .setRequestBodyExtractor(request -> null)
+                      .build())
+              .setResponseParser(
+                  ProtoMessageResponseParser.<Policy>newBuilder()
+                      .setDefaultInstance(Policy.getDefaultInstance())
+                      .setDefaultTypeRegistry(typeRegistry)
+                      .build())
+              .build();
+
+  private static final ApiMethodDescriptor<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsMethodDescriptor =
+          ApiMethodDescriptor.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+              .setFullMethodName("google.iam.v1.IAMPolicy/TestIamPermissions")
+              .setHttpMethod("POST")
+              .setType(ApiMethodDescriptor.MethodType.UNARY)
+              .setRequestFormatter(
+                  ProtoMessageRequestFormatter.<TestIamPermissionsRequest>newBuilder()
+                      .setPath(
+                          "/v1beta1/{resource=users/*}:testIamPermissions",
+                          request -> {
+                            Map<String, String> fields = new HashMap<>();
+                            ProtoRestSerializer<TestIamPermissionsRequest> serializer =
+                                ProtoRestSerializer.create();
+                            serializer.putPathParam(fields, "resource", request.getResource());
+                            return fields;
+                          })
+                      .setAdditionalPaths(
+                          "/v1beta1/{resource=rooms/*}:testIamPermissions",
+                          "/v1beta1/{resource=rooms/*/blurbs/*}:testIamPermissions",
+                          "/v1beta1/{resource=sequences/*}:testIamPermissions")
+                      .setQueryParamsExtractor(
+                          request -> {
+                            Map<String, List<String>> fields = new HashMap<>();
+                            ProtoRestSerializer<TestIamPermissionsRequest> serializer =
+                                ProtoRestSerializer.create();
+                            return fields;
+                          })
+                      .setRequestBodyExtractor(
+                          request ->
+                              ProtoRestSerializer.create()
+                                  .toBody("*", request.toBuilder().clearResource().build(), false))
+                      .build())
+              .setResponseParser(
+                  ProtoMessageResponseParser.<TestIamPermissionsResponse>newBuilder()
+                      .setDefaultInstance(TestIamPermissionsResponse.getDefaultInstance())
+                      .setDefaultTypeRegistry(typeRegistry)
+                      .build())
+              .build();
+
   private final UnaryCallable<RepeatRequest, RepeatResponse> repeatDataBodyCallable;
   private final UnaryCallable<RepeatRequest, RepeatResponse> repeatDataBodyInfoCallable;
   private final UnaryCallable<RepeatRequest, RepeatResponse> repeatDataQueryCallable;
@@ -593,6 +715,10 @@ public class HttpJsonComplianceStub extends ComplianceStub {
   private final UnaryCallable<ListLocationsRequest, ListLocationsPagedResponse>
       listLocationsPagedCallable;
   private final UnaryCallable<GetLocationRequest, Location> getLocationCallable;
+  private final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable;
+  private final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable;
+  private final UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable;
 
   private final BackgroundResource backgroundResources;
   private final HttpJsonStubCallableFactory callableFactory;
@@ -739,6 +865,40 @@ protected HttpJsonComplianceStub(
                   return builder.build();
                 })
             .build();
+    HttpJsonCallSettings<SetIamPolicyRequest, Policy> setIamPolicyTransportSettings =
+        HttpJsonCallSettings.<SetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(setIamPolicyMethodDescriptor)
+            .setTypeRegistry(typeRegistry)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    HttpJsonCallSettings<GetIamPolicyRequest, Policy> getIamPolicyTransportSettings =
+        HttpJsonCallSettings.<GetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(getIamPolicyMethodDescriptor)
+            .setTypeRegistry(typeRegistry)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    HttpJsonCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsTransportSettings =
+            HttpJsonCallSettings.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+                .setMethodDescriptor(testIamPermissionsMethodDescriptor)
+                .setTypeRegistry(typeRegistry)
+                .setParamsExtractor(
+                    request -> {
+                      RequestParamsBuilder builder = RequestParamsBuilder.create();
+                      builder.add("resource", String.valueOf(request.getResource()));
+                      return builder.build();
+                    })
+                .build();
 
     this.repeatDataBodyCallable =
         callableFactory.createUnaryCallable(
@@ -791,6 +951,17 @@ protected HttpJsonComplianceStub(
     this.getLocationCallable =
         callableFactory.createUnaryCallable(
             getLocationTransportSettings, settings.getLocationSettings(), clientContext);
+    this.setIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            setIamPolicyTransportSettings, settings.setIamPolicySettings(), clientContext);
+    this.getIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            getIamPolicyTransportSettings, settings.getIamPolicySettings(), clientContext);
+    this.testIamPermissionsCallable =
+        callableFactory.createUnaryCallable(
+            testIamPermissionsTransportSettings,
+            settings.testIamPermissionsSettings(),
+            clientContext);
 
     this.backgroundResources =
         new BackgroundResourceAggregation(clientContext.getBackgroundResources());
@@ -811,6 +982,9 @@ public static List<ApiMethodDescriptor> getMethodDescriptors() {
     methodDescriptors.add(verifyEnumMethodDescriptor);
     methodDescriptors.add(listLocationsMethodDescriptor);
     methodDescriptors.add(getLocationMethodDescriptor);
+    methodDescriptors.add(setIamPolicyMethodDescriptor);
+    methodDescriptors.add(getIamPolicyMethodDescriptor);
+    methodDescriptors.add(testIamPermissionsMethodDescriptor);
     return methodDescriptors;
   }
 
@@ -880,6 +1054,22 @@ public UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     return getLocationCallable;
   }
 
+  @Override
+  public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    return setIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    return getIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    return testIamPermissionsCallable;
+  }
+
   @Override
   public final void close() {
     try {
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonEchoStub.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonEchoStub.java
index 494d6613c7..fd39bf8711 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonEchoStub.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonEchoStub.java
@@ -47,6 +47,11 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.collect.ImmutableMap;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.Operation;
 import com.google.protobuf.TypeRegistry;
 import com.google.showcase.v1beta1.BlockRequest;
@@ -388,6 +393,123 @@ public class HttpJsonEchoStub extends EchoStub {
                       .build())
               .build();
 
+  private static final ApiMethodDescriptor<SetIamPolicyRequest, Policy>
+      setIamPolicyMethodDescriptor =
+          ApiMethodDescriptor.<SetIamPolicyRequest, Policy>newBuilder()
+              .setFullMethodName("google.iam.v1.IAMPolicy/SetIamPolicy")
+              .setHttpMethod("POST")
+              .setType(ApiMethodDescriptor.MethodType.UNARY)
+              .setRequestFormatter(
+                  ProtoMessageRequestFormatter.<SetIamPolicyRequest>newBuilder()
+                      .setPath(
+                          "/v1beta1/{resource=users/*}:setIamPolicy",
+                          request -> {
+                            Map<String, String> fields = new HashMap<>();
+                            ProtoRestSerializer<SetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            serializer.putPathParam(fields, "resource", request.getResource());
+                            return fields;
+                          })
+                      .setAdditionalPaths(
+                          "/v1beta1/{resource=rooms/*}:setIamPolicy",
+                          "/v1beta1/{resource=rooms/*/blurbs/*}:setIamPolicy",
+                          "/v1beta1/{resource=sequences/*}:setIamPolicy")
+                      .setQueryParamsExtractor(
+                          request -> {
+                            Map<String, List<String>> fields = new HashMap<>();
+                            ProtoRestSerializer<SetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            return fields;
+                          })
+                      .setRequestBodyExtractor(
+                          request ->
+                              ProtoRestSerializer.create()
+                                  .toBody("*", request.toBuilder().clearResource().build(), false))
+                      .build())
+              .setResponseParser(
+                  ProtoMessageResponseParser.<Policy>newBuilder()
+                      .setDefaultInstance(Policy.getDefaultInstance())
+                      .setDefaultTypeRegistry(typeRegistry)
+                      .build())
+              .build();
+
+  private static final ApiMethodDescriptor<GetIamPolicyRequest, Policy>
+      getIamPolicyMethodDescriptor =
+          ApiMethodDescriptor.<GetIamPolicyRequest, Policy>newBuilder()
+              .setFullMethodName("google.iam.v1.IAMPolicy/GetIamPolicy")
+              .setHttpMethod("GET")
+              .setType(ApiMethodDescriptor.MethodType.UNARY)
+              .setRequestFormatter(
+                  ProtoMessageRequestFormatter.<GetIamPolicyRequest>newBuilder()
+                      .setPath(
+                          "/v1beta1/{resource=users/*}:getIamPolicy",
+                          request -> {
+                            Map<String, String> fields = new HashMap<>();
+                            ProtoRestSerializer<GetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            serializer.putPathParam(fields, "resource", request.getResource());
+                            return fields;
+                          })
+                      .setAdditionalPaths(
+                          "/v1beta1/{resource=rooms/*}:getIamPolicy",
+                          "/v1beta1/{resource=rooms/*/blurbs/*}:getIamPolicy",
+                          "/v1beta1/{resource=sequences/*}:getIamPolicy")
+                      .setQueryParamsExtractor(
+                          request -> {
+                            Map<String, List<String>> fields = new HashMap<>();
+                            ProtoRestSerializer<GetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            return fields;
+                          })
+                      .setRequestBodyExtractor(request -> null)
+                      .build())
+              .setResponseParser(
+                  ProtoMessageResponseParser.<Policy>newBuilder()
+                      .setDefaultInstance(Policy.getDefaultInstance())
+                      .setDefaultTypeRegistry(typeRegistry)
+                      .build())
+              .build();
+
+  private static final ApiMethodDescriptor<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsMethodDescriptor =
+          ApiMethodDescriptor.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+              .setFullMethodName("google.iam.v1.IAMPolicy/TestIamPermissions")
+              .setHttpMethod("POST")
+              .setType(ApiMethodDescriptor.MethodType.UNARY)
+              .setRequestFormatter(
+                  ProtoMessageRequestFormatter.<TestIamPermissionsRequest>newBuilder()
+                      .setPath(
+                          "/v1beta1/{resource=users/*}:testIamPermissions",
+                          request -> {
+                            Map<String, String> fields = new HashMap<>();
+                            ProtoRestSerializer<TestIamPermissionsRequest> serializer =
+                                ProtoRestSerializer.create();
+                            serializer.putPathParam(fields, "resource", request.getResource());
+                            return fields;
+                          })
+                      .setAdditionalPaths(
+                          "/v1beta1/{resource=rooms/*}:testIamPermissions",
+                          "/v1beta1/{resource=rooms/*/blurbs/*}:testIamPermissions",
+                          "/v1beta1/{resource=sequences/*}:testIamPermissions")
+                      .setQueryParamsExtractor(
+                          request -> {
+                            Map<String, List<String>> fields = new HashMap<>();
+                            ProtoRestSerializer<TestIamPermissionsRequest> serializer =
+                                ProtoRestSerializer.create();
+                            return fields;
+                          })
+                      .setRequestBodyExtractor(
+                          request ->
+                              ProtoRestSerializer.create()
+                                  .toBody("*", request.toBuilder().clearResource().build(), false))
+                      .build())
+              .setResponseParser(
+                  ProtoMessageResponseParser.<TestIamPermissionsResponse>newBuilder()
+                      .setDefaultInstance(TestIamPermissionsResponse.getDefaultInstance())
+                      .setDefaultTypeRegistry(typeRegistry)
+                      .build())
+              .build();
+
   private final UnaryCallable<EchoRequest, EchoResponse> echoCallable;
   private final ServerStreamingCallable<ExpandRequest, EchoResponse> expandCallable;
   private final UnaryCallable<PagedExpandRequest, PagedExpandResponse> pagedExpandCallable;
@@ -406,6 +528,10 @@ public class HttpJsonEchoStub extends EchoStub {
   private final UnaryCallable<ListLocationsRequest, ListLocationsPagedResponse>
       listLocationsPagedCallable;
   private final UnaryCallable<GetLocationRequest, Location> getLocationCallable;
+  private final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable;
+  private final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable;
+  private final UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable;
 
   private final BackgroundResource backgroundResources;
   private final HttpJsonOperationsStub httpJsonOperationsStub;
@@ -551,6 +677,40 @@ protected HttpJsonEchoStub(
                   return builder.build();
                 })
             .build();
+    HttpJsonCallSettings<SetIamPolicyRequest, Policy> setIamPolicyTransportSettings =
+        HttpJsonCallSettings.<SetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(setIamPolicyMethodDescriptor)
+            .setTypeRegistry(typeRegistry)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    HttpJsonCallSettings<GetIamPolicyRequest, Policy> getIamPolicyTransportSettings =
+        HttpJsonCallSettings.<GetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(getIamPolicyMethodDescriptor)
+            .setTypeRegistry(typeRegistry)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    HttpJsonCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsTransportSettings =
+            HttpJsonCallSettings.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+                .setMethodDescriptor(testIamPermissionsMethodDescriptor)
+                .setTypeRegistry(typeRegistry)
+                .setParamsExtractor(
+                    request -> {
+                      RequestParamsBuilder builder = RequestParamsBuilder.create();
+                      builder.add("resource", String.valueOf(request.getResource()));
+                      return builder.build();
+                    })
+                .build();
 
     this.echoCallable =
         callableFactory.createUnaryCallable(
@@ -600,6 +760,17 @@ protected HttpJsonEchoStub(
     this.getLocationCallable =
         callableFactory.createUnaryCallable(
             getLocationTransportSettings, settings.getLocationSettings(), clientContext);
+    this.setIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            setIamPolicyTransportSettings, settings.setIamPolicySettings(), clientContext);
+    this.getIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            getIamPolicyTransportSettings, settings.getIamPolicySettings(), clientContext);
+    this.testIamPermissionsCallable =
+        callableFactory.createUnaryCallable(
+            testIamPermissionsTransportSettings,
+            settings.testIamPermissionsSettings(),
+            clientContext);
 
     this.backgroundResources =
         new BackgroundResourceAggregation(clientContext.getBackgroundResources());
@@ -617,6 +788,9 @@ public static List<ApiMethodDescriptor> getMethodDescriptors() {
     methodDescriptors.add(blockMethodDescriptor);
     methodDescriptors.add(listLocationsMethodDescriptor);
     methodDescriptors.add(getLocationMethodDescriptor);
+    methodDescriptors.add(setIamPolicyMethodDescriptor);
+    methodDescriptors.add(getIamPolicyMethodDescriptor);
+    methodDescriptors.add(testIamPermissionsMethodDescriptor);
     return methodDescriptors;
   }
 
@@ -692,6 +866,22 @@ public UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     return getLocationCallable;
   }
 
+  @Override
+  public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    return setIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    return getIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    return testIamPermissionsCallable;
+  }
+
   @Override
   public ClientStreamingCallable<EchoRequest, EchoResponse> collectCallable() {
     throw new UnsupportedOperationException(
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonIdentityStub.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonIdentityStub.java
index 264eb6c5bc..baa9736528 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonIdentityStub.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonIdentityStub.java
@@ -36,6 +36,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import com.google.protobuf.TypeRegistry;
 import com.google.showcase.v1beta1.CreateUserRequest;
@@ -297,6 +302,123 @@ public class HttpJsonIdentityStub extends IdentityStub {
                       .build())
               .build();
 
+  private static final ApiMethodDescriptor<SetIamPolicyRequest, Policy>
+      setIamPolicyMethodDescriptor =
+          ApiMethodDescriptor.<SetIamPolicyRequest, Policy>newBuilder()
+              .setFullMethodName("google.iam.v1.IAMPolicy/SetIamPolicy")
+              .setHttpMethod("POST")
+              .setType(ApiMethodDescriptor.MethodType.UNARY)
+              .setRequestFormatter(
+                  ProtoMessageRequestFormatter.<SetIamPolicyRequest>newBuilder()
+                      .setPath(
+                          "/v1beta1/{resource=users/*}:setIamPolicy",
+                          request -> {
+                            Map<String, String> fields = new HashMap<>();
+                            ProtoRestSerializer<SetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            serializer.putPathParam(fields, "resource", request.getResource());
+                            return fields;
+                          })
+                      .setAdditionalPaths(
+                          "/v1beta1/{resource=rooms/*}:setIamPolicy",
+                          "/v1beta1/{resource=rooms/*/blurbs/*}:setIamPolicy",
+                          "/v1beta1/{resource=sequences/*}:setIamPolicy")
+                      .setQueryParamsExtractor(
+                          request -> {
+                            Map<String, List<String>> fields = new HashMap<>();
+                            ProtoRestSerializer<SetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            return fields;
+                          })
+                      .setRequestBodyExtractor(
+                          request ->
+                              ProtoRestSerializer.create()
+                                  .toBody("*", request.toBuilder().clearResource().build(), false))
+                      .build())
+              .setResponseParser(
+                  ProtoMessageResponseParser.<Policy>newBuilder()
+                      .setDefaultInstance(Policy.getDefaultInstance())
+                      .setDefaultTypeRegistry(typeRegistry)
+                      .build())
+              .build();
+
+  private static final ApiMethodDescriptor<GetIamPolicyRequest, Policy>
+      getIamPolicyMethodDescriptor =
+          ApiMethodDescriptor.<GetIamPolicyRequest, Policy>newBuilder()
+              .setFullMethodName("google.iam.v1.IAMPolicy/GetIamPolicy")
+              .setHttpMethod("GET")
+              .setType(ApiMethodDescriptor.MethodType.UNARY)
+              .setRequestFormatter(
+                  ProtoMessageRequestFormatter.<GetIamPolicyRequest>newBuilder()
+                      .setPath(
+                          "/v1beta1/{resource=users/*}:getIamPolicy",
+                          request -> {
+                            Map<String, String> fields = new HashMap<>();
+                            ProtoRestSerializer<GetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            serializer.putPathParam(fields, "resource", request.getResource());
+                            return fields;
+                          })
+                      .setAdditionalPaths(
+                          "/v1beta1/{resource=rooms/*}:getIamPolicy",
+                          "/v1beta1/{resource=rooms/*/blurbs/*}:getIamPolicy",
+                          "/v1beta1/{resource=sequences/*}:getIamPolicy")
+                      .setQueryParamsExtractor(
+                          request -> {
+                            Map<String, List<String>> fields = new HashMap<>();
+                            ProtoRestSerializer<GetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            return fields;
+                          })
+                      .setRequestBodyExtractor(request -> null)
+                      .build())
+              .setResponseParser(
+                  ProtoMessageResponseParser.<Policy>newBuilder()
+                      .setDefaultInstance(Policy.getDefaultInstance())
+                      .setDefaultTypeRegistry(typeRegistry)
+                      .build())
+              .build();
+
+  private static final ApiMethodDescriptor<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsMethodDescriptor =
+          ApiMethodDescriptor.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+              .setFullMethodName("google.iam.v1.IAMPolicy/TestIamPermissions")
+              .setHttpMethod("POST")
+              .setType(ApiMethodDescriptor.MethodType.UNARY)
+              .setRequestFormatter(
+                  ProtoMessageRequestFormatter.<TestIamPermissionsRequest>newBuilder()
+                      .setPath(
+                          "/v1beta1/{resource=users/*}:testIamPermissions",
+                          request -> {
+                            Map<String, String> fields = new HashMap<>();
+                            ProtoRestSerializer<TestIamPermissionsRequest> serializer =
+                                ProtoRestSerializer.create();
+                            serializer.putPathParam(fields, "resource", request.getResource());
+                            return fields;
+                          })
+                      .setAdditionalPaths(
+                          "/v1beta1/{resource=rooms/*}:testIamPermissions",
+                          "/v1beta1/{resource=rooms/*/blurbs/*}:testIamPermissions",
+                          "/v1beta1/{resource=sequences/*}:testIamPermissions")
+                      .setQueryParamsExtractor(
+                          request -> {
+                            Map<String, List<String>> fields = new HashMap<>();
+                            ProtoRestSerializer<TestIamPermissionsRequest> serializer =
+                                ProtoRestSerializer.create();
+                            return fields;
+                          })
+                      .setRequestBodyExtractor(
+                          request ->
+                              ProtoRestSerializer.create()
+                                  .toBody("*", request.toBuilder().clearResource().build(), false))
+                      .build())
+              .setResponseParser(
+                  ProtoMessageResponseParser.<TestIamPermissionsResponse>newBuilder()
+                      .setDefaultInstance(TestIamPermissionsResponse.getDefaultInstance())
+                      .setDefaultTypeRegistry(typeRegistry)
+                      .build())
+              .build();
+
   private final UnaryCallable<CreateUserRequest, User> createUserCallable;
   private final UnaryCallable<GetUserRequest, User> getUserCallable;
   private final UnaryCallable<UpdateUserRequest, User> updateUserCallable;
@@ -307,6 +429,10 @@ public class HttpJsonIdentityStub extends IdentityStub {
   private final UnaryCallable<ListLocationsRequest, ListLocationsPagedResponse>
       listLocationsPagedCallable;
   private final UnaryCallable<GetLocationRequest, Location> getLocationCallable;
+  private final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable;
+  private final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable;
+  private final UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable;
 
   private final BackgroundResource backgroundResources;
   private final HttpJsonStubCallableFactory callableFactory;
@@ -415,6 +541,40 @@ protected HttpJsonIdentityStub(
                   return builder.build();
                 })
             .build();
+    HttpJsonCallSettings<SetIamPolicyRequest, Policy> setIamPolicyTransportSettings =
+        HttpJsonCallSettings.<SetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(setIamPolicyMethodDescriptor)
+            .setTypeRegistry(typeRegistry)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    HttpJsonCallSettings<GetIamPolicyRequest, Policy> getIamPolicyTransportSettings =
+        HttpJsonCallSettings.<GetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(getIamPolicyMethodDescriptor)
+            .setTypeRegistry(typeRegistry)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    HttpJsonCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsTransportSettings =
+            HttpJsonCallSettings.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+                .setMethodDescriptor(testIamPermissionsMethodDescriptor)
+                .setTypeRegistry(typeRegistry)
+                .setParamsExtractor(
+                    request -> {
+                      RequestParamsBuilder builder = RequestParamsBuilder.create();
+                      builder.add("resource", String.valueOf(request.getResource()));
+                      return builder.build();
+                    })
+                .build();
 
     this.createUserCallable =
         callableFactory.createUnaryCallable(
@@ -443,6 +603,17 @@ protected HttpJsonIdentityStub(
     this.getLocationCallable =
         callableFactory.createUnaryCallable(
             getLocationTransportSettings, settings.getLocationSettings(), clientContext);
+    this.setIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            setIamPolicyTransportSettings, settings.setIamPolicySettings(), clientContext);
+    this.getIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            getIamPolicyTransportSettings, settings.getIamPolicySettings(), clientContext);
+    this.testIamPermissionsCallable =
+        callableFactory.createUnaryCallable(
+            testIamPermissionsTransportSettings,
+            settings.testIamPermissionsSettings(),
+            clientContext);
 
     this.backgroundResources =
         new BackgroundResourceAggregation(clientContext.getBackgroundResources());
@@ -458,6 +629,9 @@ public static List<ApiMethodDescriptor> getMethodDescriptors() {
     methodDescriptors.add(listUsersMethodDescriptor);
     methodDescriptors.add(listLocationsMethodDescriptor);
     methodDescriptors.add(getLocationMethodDescriptor);
+    methodDescriptors.add(setIamPolicyMethodDescriptor);
+    methodDescriptors.add(getIamPolicyMethodDescriptor);
+    methodDescriptors.add(testIamPermissionsMethodDescriptor);
     return methodDescriptors;
   }
 
@@ -507,6 +681,22 @@ public UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     return getLocationCallable;
   }
 
+  @Override
+  public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    return setIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    return getIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    return testIamPermissionsCallable;
+  }
+
   @Override
   public final void close() {
     try {
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonMessagingStub.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonMessagingStub.java
index 100623c169..dde66e8083 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonMessagingStub.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonMessagingStub.java
@@ -46,6 +46,11 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.collect.ImmutableMap;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.Operation;
 import com.google.protobuf.Empty;
 import com.google.protobuf.TypeRegistry;
@@ -577,6 +582,123 @@ public class HttpJsonMessagingStub extends MessagingStub {
                       .build())
               .build();
 
+  private static final ApiMethodDescriptor<SetIamPolicyRequest, Policy>
+      setIamPolicyMethodDescriptor =
+          ApiMethodDescriptor.<SetIamPolicyRequest, Policy>newBuilder()
+              .setFullMethodName("google.iam.v1.IAMPolicy/SetIamPolicy")
+              .setHttpMethod("POST")
+              .setType(ApiMethodDescriptor.MethodType.UNARY)
+              .setRequestFormatter(
+                  ProtoMessageRequestFormatter.<SetIamPolicyRequest>newBuilder()
+                      .setPath(
+                          "/v1beta1/{resource=users/*}:setIamPolicy",
+                          request -> {
+                            Map<String, String> fields = new HashMap<>();
+                            ProtoRestSerializer<SetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            serializer.putPathParam(fields, "resource", request.getResource());
+                            return fields;
+                          })
+                      .setAdditionalPaths(
+                          "/v1beta1/{resource=rooms/*}:setIamPolicy",
+                          "/v1beta1/{resource=rooms/*/blurbs/*}:setIamPolicy",
+                          "/v1beta1/{resource=sequences/*}:setIamPolicy")
+                      .setQueryParamsExtractor(
+                          request -> {
+                            Map<String, List<String>> fields = new HashMap<>();
+                            ProtoRestSerializer<SetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            return fields;
+                          })
+                      .setRequestBodyExtractor(
+                          request ->
+                              ProtoRestSerializer.create()
+                                  .toBody("*", request.toBuilder().clearResource().build(), false))
+                      .build())
+              .setResponseParser(
+                  ProtoMessageResponseParser.<Policy>newBuilder()
+                      .setDefaultInstance(Policy.getDefaultInstance())
+                      .setDefaultTypeRegistry(typeRegistry)
+                      .build())
+              .build();
+
+  private static final ApiMethodDescriptor<GetIamPolicyRequest, Policy>
+      getIamPolicyMethodDescriptor =
+          ApiMethodDescriptor.<GetIamPolicyRequest, Policy>newBuilder()
+              .setFullMethodName("google.iam.v1.IAMPolicy/GetIamPolicy")
+              .setHttpMethod("GET")
+              .setType(ApiMethodDescriptor.MethodType.UNARY)
+              .setRequestFormatter(
+                  ProtoMessageRequestFormatter.<GetIamPolicyRequest>newBuilder()
+                      .setPath(
+                          "/v1beta1/{resource=users/*}:getIamPolicy",
+                          request -> {
+                            Map<String, String> fields = new HashMap<>();
+                            ProtoRestSerializer<GetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            serializer.putPathParam(fields, "resource", request.getResource());
+                            return fields;
+                          })
+                      .setAdditionalPaths(
+                          "/v1beta1/{resource=rooms/*}:getIamPolicy",
+                          "/v1beta1/{resource=rooms/*/blurbs/*}:getIamPolicy",
+                          "/v1beta1/{resource=sequences/*}:getIamPolicy")
+                      .setQueryParamsExtractor(
+                          request -> {
+                            Map<String, List<String>> fields = new HashMap<>();
+                            ProtoRestSerializer<GetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            return fields;
+                          })
+                      .setRequestBodyExtractor(request -> null)
+                      .build())
+              .setResponseParser(
+                  ProtoMessageResponseParser.<Policy>newBuilder()
+                      .setDefaultInstance(Policy.getDefaultInstance())
+                      .setDefaultTypeRegistry(typeRegistry)
+                      .build())
+              .build();
+
+  private static final ApiMethodDescriptor<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsMethodDescriptor =
+          ApiMethodDescriptor.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+              .setFullMethodName("google.iam.v1.IAMPolicy/TestIamPermissions")
+              .setHttpMethod("POST")
+              .setType(ApiMethodDescriptor.MethodType.UNARY)
+              .setRequestFormatter(
+                  ProtoMessageRequestFormatter.<TestIamPermissionsRequest>newBuilder()
+                      .setPath(
+                          "/v1beta1/{resource=users/*}:testIamPermissions",
+                          request -> {
+                            Map<String, String> fields = new HashMap<>();
+                            ProtoRestSerializer<TestIamPermissionsRequest> serializer =
+                                ProtoRestSerializer.create();
+                            serializer.putPathParam(fields, "resource", request.getResource());
+                            return fields;
+                          })
+                      .setAdditionalPaths(
+                          "/v1beta1/{resource=rooms/*}:testIamPermissions",
+                          "/v1beta1/{resource=rooms/*/blurbs/*}:testIamPermissions",
+                          "/v1beta1/{resource=sequences/*}:testIamPermissions")
+                      .setQueryParamsExtractor(
+                          request -> {
+                            Map<String, List<String>> fields = new HashMap<>();
+                            ProtoRestSerializer<TestIamPermissionsRequest> serializer =
+                                ProtoRestSerializer.create();
+                            return fields;
+                          })
+                      .setRequestBodyExtractor(
+                          request ->
+                              ProtoRestSerializer.create()
+                                  .toBody("*", request.toBuilder().clearResource().build(), false))
+                      .build())
+              .setResponseParser(
+                  ProtoMessageResponseParser.<TestIamPermissionsResponse>newBuilder()
+                      .setDefaultInstance(TestIamPermissionsResponse.getDefaultInstance())
+                      .setDefaultTypeRegistry(typeRegistry)
+                      .build())
+              .build();
+
   private final UnaryCallable<CreateRoomRequest, Room> createRoomCallable;
   private final UnaryCallable<GetRoomRequest, Room> getRoomCallable;
   private final UnaryCallable<UpdateRoomRequest, Room> updateRoomCallable;
@@ -598,6 +720,10 @@ public class HttpJsonMessagingStub extends MessagingStub {
   private final UnaryCallable<ListLocationsRequest, ListLocationsPagedResponse>
       listLocationsPagedCallable;
   private final UnaryCallable<GetLocationRequest, Location> getLocationCallable;
+  private final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable;
+  private final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable;
+  private final UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable;
 
   private final BackgroundResource backgroundResources;
   private final HttpJsonOperationsStub httpJsonOperationsStub;
@@ -803,6 +929,40 @@ protected HttpJsonMessagingStub(
                   return builder.build();
                 })
             .build();
+    HttpJsonCallSettings<SetIamPolicyRequest, Policy> setIamPolicyTransportSettings =
+        HttpJsonCallSettings.<SetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(setIamPolicyMethodDescriptor)
+            .setTypeRegistry(typeRegistry)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    HttpJsonCallSettings<GetIamPolicyRequest, Policy> getIamPolicyTransportSettings =
+        HttpJsonCallSettings.<GetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(getIamPolicyMethodDescriptor)
+            .setTypeRegistry(typeRegistry)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    HttpJsonCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsTransportSettings =
+            HttpJsonCallSettings.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+                .setMethodDescriptor(testIamPermissionsMethodDescriptor)
+                .setTypeRegistry(typeRegistry)
+                .setParamsExtractor(
+                    request -> {
+                      RequestParamsBuilder builder = RequestParamsBuilder.create();
+                      builder.add("resource", String.valueOf(request.getResource()));
+                      return builder.build();
+                    })
+                .build();
 
     this.createRoomCallable =
         callableFactory.createUnaryCallable(
@@ -861,6 +1021,17 @@ protected HttpJsonMessagingStub(
     this.getLocationCallable =
         callableFactory.createUnaryCallable(
             getLocationTransportSettings, settings.getLocationSettings(), clientContext);
+    this.setIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            setIamPolicyTransportSettings, settings.setIamPolicySettings(), clientContext);
+    this.getIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            getIamPolicyTransportSettings, settings.getIamPolicySettings(), clientContext);
+    this.testIamPermissionsCallable =
+        callableFactory.createUnaryCallable(
+            testIamPermissionsTransportSettings,
+            settings.testIamPermissionsSettings(),
+            clientContext);
 
     this.backgroundResources =
         new BackgroundResourceAggregation(clientContext.getBackgroundResources());
@@ -883,6 +1054,9 @@ public static List<ApiMethodDescriptor> getMethodDescriptors() {
     methodDescriptors.add(streamBlurbsMethodDescriptor);
     methodDescriptors.add(listLocationsMethodDescriptor);
     methodDescriptors.add(getLocationMethodDescriptor);
+    methodDescriptors.add(setIamPolicyMethodDescriptor);
+    methodDescriptors.add(getIamPolicyMethodDescriptor);
+    methodDescriptors.add(testIamPermissionsMethodDescriptor);
     return methodDescriptors;
   }
 
@@ -982,6 +1156,22 @@ public UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     return getLocationCallable;
   }
 
+  @Override
+  public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    return setIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    return getIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    return testIamPermissionsCallable;
+  }
+
   @Override
   public ClientStreamingCallable<CreateBlurbRequest, SendBlurbsResponse> sendBlurbsCallable() {
     throw new UnsupportedOperationException(
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonSequenceServiceStub.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonSequenceServiceStub.java
index 4652aef4a4..5c1f451476 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonSequenceServiceStub.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonSequenceServiceStub.java
@@ -36,6 +36,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import com.google.protobuf.TypeRegistry;
 import com.google.showcase.v1beta1.AttemptSequenceRequest;
@@ -348,6 +353,123 @@ public class HttpJsonSequenceServiceStub extends SequenceServiceStub {
                       .build())
               .build();
 
+  private static final ApiMethodDescriptor<SetIamPolicyRequest, Policy>
+      setIamPolicyMethodDescriptor =
+          ApiMethodDescriptor.<SetIamPolicyRequest, Policy>newBuilder()
+              .setFullMethodName("google.iam.v1.IAMPolicy/SetIamPolicy")
+              .setHttpMethod("POST")
+              .setType(ApiMethodDescriptor.MethodType.UNARY)
+              .setRequestFormatter(
+                  ProtoMessageRequestFormatter.<SetIamPolicyRequest>newBuilder()
+                      .setPath(
+                          "/v1beta1/{resource=users/*}:setIamPolicy",
+                          request -> {
+                            Map<String, String> fields = new HashMap<>();
+                            ProtoRestSerializer<SetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            serializer.putPathParam(fields, "resource", request.getResource());
+                            return fields;
+                          })
+                      .setAdditionalPaths(
+                          "/v1beta1/{resource=rooms/*}:setIamPolicy",
+                          "/v1beta1/{resource=rooms/*/blurbs/*}:setIamPolicy",
+                          "/v1beta1/{resource=sequences/*}:setIamPolicy")
+                      .setQueryParamsExtractor(
+                          request -> {
+                            Map<String, List<String>> fields = new HashMap<>();
+                            ProtoRestSerializer<SetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            return fields;
+                          })
+                      .setRequestBodyExtractor(
+                          request ->
+                              ProtoRestSerializer.create()
+                                  .toBody("*", request.toBuilder().clearResource().build(), false))
+                      .build())
+              .setResponseParser(
+                  ProtoMessageResponseParser.<Policy>newBuilder()
+                      .setDefaultInstance(Policy.getDefaultInstance())
+                      .setDefaultTypeRegistry(typeRegistry)
+                      .build())
+              .build();
+
+  private static final ApiMethodDescriptor<GetIamPolicyRequest, Policy>
+      getIamPolicyMethodDescriptor =
+          ApiMethodDescriptor.<GetIamPolicyRequest, Policy>newBuilder()
+              .setFullMethodName("google.iam.v1.IAMPolicy/GetIamPolicy")
+              .setHttpMethod("GET")
+              .setType(ApiMethodDescriptor.MethodType.UNARY)
+              .setRequestFormatter(
+                  ProtoMessageRequestFormatter.<GetIamPolicyRequest>newBuilder()
+                      .setPath(
+                          "/v1beta1/{resource=users/*}:getIamPolicy",
+                          request -> {
+                            Map<String, String> fields = new HashMap<>();
+                            ProtoRestSerializer<GetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            serializer.putPathParam(fields, "resource", request.getResource());
+                            return fields;
+                          })
+                      .setAdditionalPaths(
+                          "/v1beta1/{resource=rooms/*}:getIamPolicy",
+                          "/v1beta1/{resource=rooms/*/blurbs/*}:getIamPolicy",
+                          "/v1beta1/{resource=sequences/*}:getIamPolicy")
+                      .setQueryParamsExtractor(
+                          request -> {
+                            Map<String, List<String>> fields = new HashMap<>();
+                            ProtoRestSerializer<GetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            return fields;
+                          })
+                      .setRequestBodyExtractor(request -> null)
+                      .build())
+              .setResponseParser(
+                  ProtoMessageResponseParser.<Policy>newBuilder()
+                      .setDefaultInstance(Policy.getDefaultInstance())
+                      .setDefaultTypeRegistry(typeRegistry)
+                      .build())
+              .build();
+
+  private static final ApiMethodDescriptor<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsMethodDescriptor =
+          ApiMethodDescriptor.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+              .setFullMethodName("google.iam.v1.IAMPolicy/TestIamPermissions")
+              .setHttpMethod("POST")
+              .setType(ApiMethodDescriptor.MethodType.UNARY)
+              .setRequestFormatter(
+                  ProtoMessageRequestFormatter.<TestIamPermissionsRequest>newBuilder()
+                      .setPath(
+                          "/v1beta1/{resource=users/*}:testIamPermissions",
+                          request -> {
+                            Map<String, String> fields = new HashMap<>();
+                            ProtoRestSerializer<TestIamPermissionsRequest> serializer =
+                                ProtoRestSerializer.create();
+                            serializer.putPathParam(fields, "resource", request.getResource());
+                            return fields;
+                          })
+                      .setAdditionalPaths(
+                          "/v1beta1/{resource=rooms/*}:testIamPermissions",
+                          "/v1beta1/{resource=rooms/*/blurbs/*}:testIamPermissions",
+                          "/v1beta1/{resource=sequences/*}:testIamPermissions")
+                      .setQueryParamsExtractor(
+                          request -> {
+                            Map<String, List<String>> fields = new HashMap<>();
+                            ProtoRestSerializer<TestIamPermissionsRequest> serializer =
+                                ProtoRestSerializer.create();
+                            return fields;
+                          })
+                      .setRequestBodyExtractor(
+                          request ->
+                              ProtoRestSerializer.create()
+                                  .toBody("*", request.toBuilder().clearResource().build(), false))
+                      .build())
+              .setResponseParser(
+                  ProtoMessageResponseParser.<TestIamPermissionsResponse>newBuilder()
+                      .setDefaultInstance(TestIamPermissionsResponse.getDefaultInstance())
+                      .setDefaultTypeRegistry(typeRegistry)
+                      .build())
+              .build();
+
   private final UnaryCallable<CreateSequenceRequest, Sequence> createSequenceCallable;
   private final UnaryCallable<CreateStreamingSequenceRequest, StreamingSequence>
       createStreamingSequenceCallable;
@@ -362,6 +484,10 @@ public class HttpJsonSequenceServiceStub extends SequenceServiceStub {
   private final UnaryCallable<ListLocationsRequest, ListLocationsPagedResponse>
       listLocationsPagedCallable;
   private final UnaryCallable<GetLocationRequest, Location> getLocationCallable;
+  private final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable;
+  private final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable;
+  private final UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable;
 
   private final BackgroundResource backgroundResources;
   private final HttpJsonStubCallableFactory callableFactory;
@@ -488,6 +614,40 @@ protected HttpJsonSequenceServiceStub(
                   return builder.build();
                 })
             .build();
+    HttpJsonCallSettings<SetIamPolicyRequest, Policy> setIamPolicyTransportSettings =
+        HttpJsonCallSettings.<SetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(setIamPolicyMethodDescriptor)
+            .setTypeRegistry(typeRegistry)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    HttpJsonCallSettings<GetIamPolicyRequest, Policy> getIamPolicyTransportSettings =
+        HttpJsonCallSettings.<GetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(getIamPolicyMethodDescriptor)
+            .setTypeRegistry(typeRegistry)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    HttpJsonCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsTransportSettings =
+            HttpJsonCallSettings.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+                .setMethodDescriptor(testIamPermissionsMethodDescriptor)
+                .setTypeRegistry(typeRegistry)
+                .setParamsExtractor(
+                    request -> {
+                      RequestParamsBuilder builder = RequestParamsBuilder.create();
+                      builder.add("resource", String.valueOf(request.getResource()));
+                      return builder.build();
+                    })
+                .build();
 
     this.createSequenceCallable =
         callableFactory.createUnaryCallable(
@@ -524,6 +684,17 @@ protected HttpJsonSequenceServiceStub(
     this.getLocationCallable =
         callableFactory.createUnaryCallable(
             getLocationTransportSettings, settings.getLocationSettings(), clientContext);
+    this.setIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            setIamPolicyTransportSettings, settings.setIamPolicySettings(), clientContext);
+    this.getIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            getIamPolicyTransportSettings, settings.getIamPolicySettings(), clientContext);
+    this.testIamPermissionsCallable =
+        callableFactory.createUnaryCallable(
+            testIamPermissionsTransportSettings,
+            settings.testIamPermissionsSettings(),
+            clientContext);
 
     this.backgroundResources =
         new BackgroundResourceAggregation(clientContext.getBackgroundResources());
@@ -540,6 +711,9 @@ public static List<ApiMethodDescriptor> getMethodDescriptors() {
     methodDescriptors.add(attemptStreamingSequenceMethodDescriptor);
     methodDescriptors.add(listLocationsMethodDescriptor);
     methodDescriptors.add(getLocationMethodDescriptor);
+    methodDescriptors.add(setIamPolicyMethodDescriptor);
+    methodDescriptors.add(getIamPolicyMethodDescriptor);
+    methodDescriptors.add(testIamPermissionsMethodDescriptor);
     return methodDescriptors;
   }
 
@@ -592,6 +766,22 @@ public UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     return getLocationCallable;
   }
 
+  @Override
+  public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    return setIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    return getIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    return testIamPermissionsCallable;
+  }
+
   @Override
   public final void close() {
     try {
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonTestingStub.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonTestingStub.java
index 560f9a1fb6..fd075a3229 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonTestingStub.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/HttpJsonTestingStub.java
@@ -37,6 +37,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import com.google.protobuf.TypeRegistry;
 import com.google.showcase.v1beta1.CreateSessionRequest;
@@ -406,6 +411,123 @@ public class HttpJsonTestingStub extends TestingStub {
                       .build())
               .build();
 
+  private static final ApiMethodDescriptor<SetIamPolicyRequest, Policy>
+      setIamPolicyMethodDescriptor =
+          ApiMethodDescriptor.<SetIamPolicyRequest, Policy>newBuilder()
+              .setFullMethodName("google.iam.v1.IAMPolicy/SetIamPolicy")
+              .setHttpMethod("POST")
+              .setType(ApiMethodDescriptor.MethodType.UNARY)
+              .setRequestFormatter(
+                  ProtoMessageRequestFormatter.<SetIamPolicyRequest>newBuilder()
+                      .setPath(
+                          "/v1beta1/{resource=users/*}:setIamPolicy",
+                          request -> {
+                            Map<String, String> fields = new HashMap<>();
+                            ProtoRestSerializer<SetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            serializer.putPathParam(fields, "resource", request.getResource());
+                            return fields;
+                          })
+                      .setAdditionalPaths(
+                          "/v1beta1/{resource=rooms/*}:setIamPolicy",
+                          "/v1beta1/{resource=rooms/*/blurbs/*}:setIamPolicy",
+                          "/v1beta1/{resource=sequences/*}:setIamPolicy")
+                      .setQueryParamsExtractor(
+                          request -> {
+                            Map<String, List<String>> fields = new HashMap<>();
+                            ProtoRestSerializer<SetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            return fields;
+                          })
+                      .setRequestBodyExtractor(
+                          request ->
+                              ProtoRestSerializer.create()
+                                  .toBody("*", request.toBuilder().clearResource().build(), false))
+                      .build())
+              .setResponseParser(
+                  ProtoMessageResponseParser.<Policy>newBuilder()
+                      .setDefaultInstance(Policy.getDefaultInstance())
+                      .setDefaultTypeRegistry(typeRegistry)
+                      .build())
+              .build();
+
+  private static final ApiMethodDescriptor<GetIamPolicyRequest, Policy>
+      getIamPolicyMethodDescriptor =
+          ApiMethodDescriptor.<GetIamPolicyRequest, Policy>newBuilder()
+              .setFullMethodName("google.iam.v1.IAMPolicy/GetIamPolicy")
+              .setHttpMethod("GET")
+              .setType(ApiMethodDescriptor.MethodType.UNARY)
+              .setRequestFormatter(
+                  ProtoMessageRequestFormatter.<GetIamPolicyRequest>newBuilder()
+                      .setPath(
+                          "/v1beta1/{resource=users/*}:getIamPolicy",
+                          request -> {
+                            Map<String, String> fields = new HashMap<>();
+                            ProtoRestSerializer<GetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            serializer.putPathParam(fields, "resource", request.getResource());
+                            return fields;
+                          })
+                      .setAdditionalPaths(
+                          "/v1beta1/{resource=rooms/*}:getIamPolicy",
+                          "/v1beta1/{resource=rooms/*/blurbs/*}:getIamPolicy",
+                          "/v1beta1/{resource=sequences/*}:getIamPolicy")
+                      .setQueryParamsExtractor(
+                          request -> {
+                            Map<String, List<String>> fields = new HashMap<>();
+                            ProtoRestSerializer<GetIamPolicyRequest> serializer =
+                                ProtoRestSerializer.create();
+                            return fields;
+                          })
+                      .setRequestBodyExtractor(request -> null)
+                      .build())
+              .setResponseParser(
+                  ProtoMessageResponseParser.<Policy>newBuilder()
+                      .setDefaultInstance(Policy.getDefaultInstance())
+                      .setDefaultTypeRegistry(typeRegistry)
+                      .build())
+              .build();
+
+  private static final ApiMethodDescriptor<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsMethodDescriptor =
+          ApiMethodDescriptor.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+              .setFullMethodName("google.iam.v1.IAMPolicy/TestIamPermissions")
+              .setHttpMethod("POST")
+              .setType(ApiMethodDescriptor.MethodType.UNARY)
+              .setRequestFormatter(
+                  ProtoMessageRequestFormatter.<TestIamPermissionsRequest>newBuilder()
+                      .setPath(
+                          "/v1beta1/{resource=users/*}:testIamPermissions",
+                          request -> {
+                            Map<String, String> fields = new HashMap<>();
+                            ProtoRestSerializer<TestIamPermissionsRequest> serializer =
+                                ProtoRestSerializer.create();
+                            serializer.putPathParam(fields, "resource", request.getResource());
+                            return fields;
+                          })
+                      .setAdditionalPaths(
+                          "/v1beta1/{resource=rooms/*}:testIamPermissions",
+                          "/v1beta1/{resource=rooms/*/blurbs/*}:testIamPermissions",
+                          "/v1beta1/{resource=sequences/*}:testIamPermissions")
+                      .setQueryParamsExtractor(
+                          request -> {
+                            Map<String, List<String>> fields = new HashMap<>();
+                            ProtoRestSerializer<TestIamPermissionsRequest> serializer =
+                                ProtoRestSerializer.create();
+                            return fields;
+                          })
+                      .setRequestBodyExtractor(
+                          request ->
+                              ProtoRestSerializer.create()
+                                  .toBody("*", request.toBuilder().clearResource().build(), false))
+                      .build())
+              .setResponseParser(
+                  ProtoMessageResponseParser.<TestIamPermissionsResponse>newBuilder()
+                      .setDefaultInstance(TestIamPermissionsResponse.getDefaultInstance())
+                      .setDefaultTypeRegistry(typeRegistry)
+                      .build())
+              .build();
+
   private final UnaryCallable<CreateSessionRequest, Session> createSessionCallable;
   private final UnaryCallable<GetSessionRequest, Session> getSessionCallable;
   private final UnaryCallable<ListSessionsRequest, ListSessionsResponse> listSessionsCallable;
@@ -421,6 +543,10 @@ public class HttpJsonTestingStub extends TestingStub {
   private final UnaryCallable<ListLocationsRequest, ListLocationsPagedResponse>
       listLocationsPagedCallable;
   private final UnaryCallable<GetLocationRequest, Location> getLocationCallable;
+  private final UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable;
+  private final UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable;
+  private final UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable;
 
   private final BackgroundResource backgroundResources;
   private final HttpJsonStubCallableFactory callableFactory;
@@ -561,6 +687,40 @@ protected HttpJsonTestingStub(
                   return builder.build();
                 })
             .build();
+    HttpJsonCallSettings<SetIamPolicyRequest, Policy> setIamPolicyTransportSettings =
+        HttpJsonCallSettings.<SetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(setIamPolicyMethodDescriptor)
+            .setTypeRegistry(typeRegistry)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    HttpJsonCallSettings<GetIamPolicyRequest, Policy> getIamPolicyTransportSettings =
+        HttpJsonCallSettings.<GetIamPolicyRequest, Policy>newBuilder()
+            .setMethodDescriptor(getIamPolicyMethodDescriptor)
+            .setTypeRegistry(typeRegistry)
+            .setParamsExtractor(
+                request -> {
+                  RequestParamsBuilder builder = RequestParamsBuilder.create();
+                  builder.add("resource", String.valueOf(request.getResource()));
+                  return builder.build();
+                })
+            .build();
+    HttpJsonCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsTransportSettings =
+            HttpJsonCallSettings.<TestIamPermissionsRequest, TestIamPermissionsResponse>newBuilder()
+                .setMethodDescriptor(testIamPermissionsMethodDescriptor)
+                .setTypeRegistry(typeRegistry)
+                .setParamsExtractor(
+                    request -> {
+                      RequestParamsBuilder builder = RequestParamsBuilder.create();
+                      builder.add("resource", String.valueOf(request.getResource()));
+                      return builder.build();
+                    })
+                .build();
 
     this.createSessionCallable =
         callableFactory.createUnaryCallable(
@@ -601,6 +761,17 @@ protected HttpJsonTestingStub(
     this.getLocationCallable =
         callableFactory.createUnaryCallable(
             getLocationTransportSettings, settings.getLocationSettings(), clientContext);
+    this.setIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            setIamPolicyTransportSettings, settings.setIamPolicySettings(), clientContext);
+    this.getIamPolicyCallable =
+        callableFactory.createUnaryCallable(
+            getIamPolicyTransportSettings, settings.getIamPolicySettings(), clientContext);
+    this.testIamPermissionsCallable =
+        callableFactory.createUnaryCallable(
+            testIamPermissionsTransportSettings,
+            settings.testIamPermissionsSettings(),
+            clientContext);
 
     this.backgroundResources =
         new BackgroundResourceAggregation(clientContext.getBackgroundResources());
@@ -619,6 +790,9 @@ public static List<ApiMethodDescriptor> getMethodDescriptors() {
     methodDescriptors.add(verifyTestMethodDescriptor);
     methodDescriptors.add(listLocationsMethodDescriptor);
     methodDescriptors.add(getLocationMethodDescriptor);
+    methodDescriptors.add(setIamPolicyMethodDescriptor);
+    methodDescriptors.add(getIamPolicyMethodDescriptor);
+    methodDescriptors.add(testIamPermissionsMethodDescriptor);
     return methodDescriptors;
   }
 
@@ -688,6 +862,22 @@ public UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     return getLocationCallable;
   }
 
+  @Override
+  public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    return setIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    return getIamPolicyCallable;
+  }
+
+  @Override
+  public UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    return testIamPermissionsCallable;
+  }
+
   @Override
   public final void close() {
     try {
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/IdentityStub.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/IdentityStub.java
index 04f4dfca64..55a003cfde 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/IdentityStub.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/IdentityStub.java
@@ -26,6 +26,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import com.google.showcase.v1beta1.CreateUserRequest;
 import com.google.showcase.v1beta1.DeleteUserRequest;
@@ -83,6 +88,19 @@ public UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     throw new UnsupportedOperationException("Not implemented: getLocationCallable()");
   }
 
+  public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    throw new UnsupportedOperationException("Not implemented: setIamPolicyCallable()");
+  }
+
+  public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    throw new UnsupportedOperationException("Not implemented: getIamPolicyCallable()");
+  }
+
+  public UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    throw new UnsupportedOperationException("Not implemented: testIamPermissionsCallable()");
+  }
+
   @Override
   public abstract void close();
 }
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/IdentityStubSettings.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/IdentityStubSettings.java
index 4618068588..90aa163708 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/IdentityStubSettings.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/IdentityStubSettings.java
@@ -52,6 +52,11 @@
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import com.google.showcase.v1beta1.CreateUserRequest;
 import com.google.showcase.v1beta1.DeleteUserRequest;
@@ -118,6 +123,10 @@ public class IdentityStubSettings extends StubSettings<IdentityStubSettings> {
           ListLocationsRequest, ListLocationsResponse, ListLocationsPagedResponse>
       listLocationsSettings;
   private final UnaryCallSettings<GetLocationRequest, Location> getLocationSettings;
+  private final UnaryCallSettings<SetIamPolicyRequest, Policy> setIamPolicySettings;
+  private final UnaryCallSettings<GetIamPolicyRequest, Policy> getIamPolicySettings;
+  private final UnaryCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsSettings;
 
   private static final PagedListDescriptor<ListUsersRequest, ListUsersResponse, User>
       LIST_USERS_PAGE_STR_DESC =
@@ -262,6 +271,22 @@ public UnaryCallSettings<GetLocationRequest, Location> getLocationSettings() {
     return getLocationSettings;
   }
 
+  /** Returns the object with the settings used for calls to setIamPolicy. */
+  public UnaryCallSettings<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+    return setIamPolicySettings;
+  }
+
+  /** Returns the object with the settings used for calls to getIamPolicy. */
+  public UnaryCallSettings<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+    return getIamPolicySettings;
+  }
+
+  /** Returns the object with the settings used for calls to testIamPermissions. */
+  public UnaryCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsSettings() {
+    return testIamPermissionsSettings;
+  }
+
   public IdentityStub createStub() throws IOException {
     if (getTransportChannelProvider()
         .getTransportName()
@@ -373,6 +398,9 @@ protected IdentityStubSettings(Builder settingsBuilder) throws IOException {
     listUsersSettings = settingsBuilder.listUsersSettings().build();
     listLocationsSettings = settingsBuilder.listLocationsSettings().build();
     getLocationSettings = settingsBuilder.getLocationSettings().build();
+    setIamPolicySettings = settingsBuilder.setIamPolicySettings().build();
+    getIamPolicySettings = settingsBuilder.getIamPolicySettings().build();
+    testIamPermissionsSettings = settingsBuilder.testIamPermissionsSettings().build();
   }
 
   /** Builder for IdentityStubSettings. */
@@ -389,6 +417,10 @@ public static class Builder extends StubSettings.Builder<IdentityStubSettings, B
             ListLocationsRequest, ListLocationsResponse, ListLocationsPagedResponse>
         listLocationsSettings;
     private final UnaryCallSettings.Builder<GetLocationRequest, Location> getLocationSettings;
+    private final UnaryCallSettings.Builder<SetIamPolicyRequest, Policy> setIamPolicySettings;
+    private final UnaryCallSettings.Builder<GetIamPolicyRequest, Policy> getIamPolicySettings;
+    private final UnaryCallSettings.Builder<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsSettings;
     private static final ImmutableMap<String, ImmutableSet<StatusCode.Code>>
         RETRYABLE_CODE_DEFINITIONS;
 
@@ -439,6 +471,9 @@ protected Builder(ClientContext clientContext) {
       listUsersSettings = PagedCallSettings.newBuilder(LIST_USERS_PAGE_STR_FACT);
       listLocationsSettings = PagedCallSettings.newBuilder(LIST_LOCATIONS_PAGE_STR_FACT);
       getLocationSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      setIamPolicySettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      getIamPolicySettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      testIamPermissionsSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
 
       unaryMethodSettingsBuilders =
           ImmutableList.<UnaryCallSettings.Builder<?, ?>>of(
@@ -448,7 +483,10 @@ protected Builder(ClientContext clientContext) {
               deleteUserSettings,
               listUsersSettings,
               listLocationsSettings,
-              getLocationSettings);
+              getLocationSettings,
+              setIamPolicySettings,
+              getIamPolicySettings,
+              testIamPermissionsSettings);
       initDefaults(this);
     }
 
@@ -462,6 +500,9 @@ protected Builder(IdentityStubSettings settings) {
       listUsersSettings = settings.listUsersSettings.toBuilder();
       listLocationsSettings = settings.listLocationsSettings.toBuilder();
       getLocationSettings = settings.getLocationSettings.toBuilder();
+      setIamPolicySettings = settings.setIamPolicySettings.toBuilder();
+      getIamPolicySettings = settings.getIamPolicySettings.toBuilder();
+      testIamPermissionsSettings = settings.testIamPermissionsSettings.toBuilder();
 
       unaryMethodSettingsBuilders =
           ImmutableList.<UnaryCallSettings.Builder<?, ?>>of(
@@ -471,7 +512,10 @@ protected Builder(IdentityStubSettings settings) {
               deleteUserSettings,
               listUsersSettings,
               listLocationsSettings,
-              getLocationSettings);
+              getLocationSettings,
+              setIamPolicySettings,
+              getIamPolicySettings,
+              testIamPermissionsSettings);
     }
 
     private static Builder createDefault() {
@@ -536,6 +580,21 @@ private static Builder initDefaults(Builder builder) {
           .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_codes"))
           .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_params"));
 
+      builder
+          .setIamPolicySettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_params"));
+
+      builder
+          .getIamPolicySettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_params"));
+
+      builder
+          .testIamPermissionsSettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_params"));
+
       return builder;
     }
 
@@ -592,6 +651,22 @@ public UnaryCallSettings.Builder<GetLocationRequest, Location> getLocationSettin
       return getLocationSettings;
     }
 
+    /** Returns the builder for the settings used for calls to setIamPolicy. */
+    public UnaryCallSettings.Builder<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+      return setIamPolicySettings;
+    }
+
+    /** Returns the builder for the settings used for calls to getIamPolicy. */
+    public UnaryCallSettings.Builder<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+      return getIamPolicySettings;
+    }
+
+    /** Returns the builder for the settings used for calls to testIamPermissions. */
+    public UnaryCallSettings.Builder<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsSettings() {
+      return testIamPermissionsSettings;
+    }
+
     @Override
     public IdentityStubSettings build() throws IOException {
       return new IdentityStubSettings(this);
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/MessagingStub.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/MessagingStub.java
index 8a88520533..19ed93f930 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/MessagingStub.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/MessagingStub.java
@@ -31,6 +31,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.Operation;
 import com.google.longrunning.stub.OperationsStub;
 import com.google.protobuf.Empty;
@@ -157,6 +162,19 @@ public UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     throw new UnsupportedOperationException("Not implemented: getLocationCallable()");
   }
 
+  public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    throw new UnsupportedOperationException("Not implemented: setIamPolicyCallable()");
+  }
+
+  public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    throw new UnsupportedOperationException("Not implemented: getIamPolicyCallable()");
+  }
+
+  public UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    throw new UnsupportedOperationException("Not implemented: testIamPermissionsCallable()");
+  }
+
   @Override
   public abstract void close();
 }
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/MessagingStubSettings.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/MessagingStubSettings.java
index a781f36c3e..ca632dbf10 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/MessagingStubSettings.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/MessagingStubSettings.java
@@ -59,6 +59,11 @@
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.Operation;
 import com.google.protobuf.Empty;
 import com.google.showcase.v1beta1.Blurb;
@@ -154,6 +159,10 @@ public class MessagingStubSettings extends StubSettings<MessagingStubSettings> {
           ListLocationsRequest, ListLocationsResponse, ListLocationsPagedResponse>
       listLocationsSettings;
   private final UnaryCallSettings<GetLocationRequest, Location> getLocationSettings;
+  private final UnaryCallSettings<SetIamPolicyRequest, Policy> setIamPolicySettings;
+  private final UnaryCallSettings<GetIamPolicyRequest, Policy> getIamPolicySettings;
+  private final UnaryCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsSettings;
 
   private static final PagedListDescriptor<ListRoomsRequest, ListRoomsResponse, Room>
       LIST_ROOMS_PAGE_STR_DESC =
@@ -404,6 +413,22 @@ public UnaryCallSettings<GetLocationRequest, Location> getLocationSettings() {
     return getLocationSettings;
   }
 
+  /** Returns the object with the settings used for calls to setIamPolicy. */
+  public UnaryCallSettings<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+    return setIamPolicySettings;
+  }
+
+  /** Returns the object with the settings used for calls to getIamPolicy. */
+  public UnaryCallSettings<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+    return getIamPolicySettings;
+  }
+
+  /** Returns the object with the settings used for calls to testIamPermissions. */
+  public UnaryCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsSettings() {
+    return testIamPermissionsSettings;
+  }
+
   public MessagingStub createStub() throws IOException {
     if (getTransportChannelProvider()
         .getTransportName()
@@ -525,6 +550,9 @@ protected MessagingStubSettings(Builder settingsBuilder) throws IOException {
     connectSettings = settingsBuilder.connectSettings().build();
     listLocationsSettings = settingsBuilder.listLocationsSettings().build();
     getLocationSettings = settingsBuilder.getLocationSettings().build();
+    setIamPolicySettings = settingsBuilder.setIamPolicySettings().build();
+    getIamPolicySettings = settingsBuilder.getIamPolicySettings().build();
+    testIamPermissionsSettings = settingsBuilder.testIamPermissionsSettings().build();
   }
 
   /** Builder for MessagingStubSettings. */
@@ -558,6 +586,10 @@ public static class Builder extends StubSettings.Builder<MessagingStubSettings,
             ListLocationsRequest, ListLocationsResponse, ListLocationsPagedResponse>
         listLocationsSettings;
     private final UnaryCallSettings.Builder<GetLocationRequest, Location> getLocationSettings;
+    private final UnaryCallSettings.Builder<SetIamPolicyRequest, Policy> setIamPolicySettings;
+    private final UnaryCallSettings.Builder<GetIamPolicyRequest, Policy> getIamPolicySettings;
+    private final UnaryCallSettings.Builder<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsSettings;
     private static final ImmutableMap<String, ImmutableSet<StatusCode.Code>>
         RETRYABLE_CODE_DEFINITIONS;
 
@@ -625,6 +657,9 @@ protected Builder(ClientContext clientContext) {
       connectSettings = StreamingCallSettings.newBuilder();
       listLocationsSettings = PagedCallSettings.newBuilder(LIST_LOCATIONS_PAGE_STR_FACT);
       getLocationSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      setIamPolicySettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      getIamPolicySettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      testIamPermissionsSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
 
       unaryMethodSettingsBuilders =
           ImmutableList.<UnaryCallSettings.Builder<?, ?>>of(
@@ -640,7 +675,10 @@ protected Builder(ClientContext clientContext) {
               listBlurbsSettings,
               searchBlurbsSettings,
               listLocationsSettings,
-              getLocationSettings);
+              getLocationSettings,
+              setIamPolicySettings,
+              getIamPolicySettings,
+              testIamPermissionsSettings);
       initDefaults(this);
     }
 
@@ -664,6 +702,9 @@ protected Builder(MessagingStubSettings settings) {
       connectSettings = settings.connectSettings.toBuilder();
       listLocationsSettings = settings.listLocationsSettings.toBuilder();
       getLocationSettings = settings.getLocationSettings.toBuilder();
+      setIamPolicySettings = settings.setIamPolicySettings.toBuilder();
+      getIamPolicySettings = settings.getIamPolicySettings.toBuilder();
+      testIamPermissionsSettings = settings.testIamPermissionsSettings.toBuilder();
 
       unaryMethodSettingsBuilders =
           ImmutableList.<UnaryCallSettings.Builder<?, ?>>of(
@@ -679,7 +720,10 @@ protected Builder(MessagingStubSettings settings) {
               listBlurbsSettings,
               searchBlurbsSettings,
               listLocationsSettings,
-              getLocationSettings);
+              getLocationSettings,
+              setIamPolicySettings,
+              getIamPolicySettings,
+              testIamPermissionsSettings);
     }
 
     private static Builder createDefault() {
@@ -779,6 +823,21 @@ private static Builder initDefaults(Builder builder) {
           .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_0_codes"))
           .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_0_params"));
 
+      builder
+          .setIamPolicySettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_0_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_0_params"));
+
+      builder
+          .getIamPolicySettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_0_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_0_params"));
+
+      builder
+          .testIamPermissionsSettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_0_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_0_params"));
+
       builder
           .searchBlurbsOperationSettings()
           .setInitialCallSettings(
@@ -916,6 +975,22 @@ public UnaryCallSettings.Builder<GetLocationRequest, Location> getLocationSettin
       return getLocationSettings;
     }
 
+    /** Returns the builder for the settings used for calls to setIamPolicy. */
+    public UnaryCallSettings.Builder<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+      return setIamPolicySettings;
+    }
+
+    /** Returns the builder for the settings used for calls to getIamPolicy. */
+    public UnaryCallSettings.Builder<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+      return getIamPolicySettings;
+    }
+
+    /** Returns the builder for the settings used for calls to testIamPermissions. */
+    public UnaryCallSettings.Builder<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsSettings() {
+      return testIamPermissionsSettings;
+    }
+
     @Override
     public MessagingStubSettings build() throws IOException {
       return new MessagingStubSettings(this);
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/SequenceServiceStub.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/SequenceServiceStub.java
index 1442052ddc..d657fe528b 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/SequenceServiceStub.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/SequenceServiceStub.java
@@ -26,6 +26,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import com.google.showcase.v1beta1.AttemptSequenceRequest;
 import com.google.showcase.v1beta1.AttemptStreamingSequenceRequest;
@@ -91,6 +96,19 @@ public UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     throw new UnsupportedOperationException("Not implemented: getLocationCallable()");
   }
 
+  public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    throw new UnsupportedOperationException("Not implemented: setIamPolicyCallable()");
+  }
+
+  public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    throw new UnsupportedOperationException("Not implemented: getIamPolicyCallable()");
+  }
+
+  public UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    throw new UnsupportedOperationException("Not implemented: testIamPermissionsCallable()");
+  }
+
   @Override
   public abstract void close();
 }
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/SequenceServiceStubSettings.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/SequenceServiceStubSettings.java
index d95c94c97c..f4e0d2f82a 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/SequenceServiceStubSettings.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/SequenceServiceStubSettings.java
@@ -52,6 +52,11 @@
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import com.google.showcase.v1beta1.AttemptSequenceRequest;
 import com.google.showcase.v1beta1.AttemptStreamingSequenceRequest;
@@ -128,6 +133,10 @@ public class SequenceServiceStubSettings extends StubSettings<SequenceServiceStu
           ListLocationsRequest, ListLocationsResponse, ListLocationsPagedResponse>
       listLocationsSettings;
   private final UnaryCallSettings<GetLocationRequest, Location> getLocationSettings;
+  private final UnaryCallSettings<SetIamPolicyRequest, Policy> setIamPolicySettings;
+  private final UnaryCallSettings<GetIamPolicyRequest, Policy> getIamPolicySettings;
+  private final UnaryCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsSettings;
 
   private static final PagedListDescriptor<ListLocationsRequest, ListLocationsResponse, Location>
       LIST_LOCATIONS_PAGE_STR_DESC =
@@ -227,6 +236,22 @@ public UnaryCallSettings<GetLocationRequest, Location> getLocationSettings() {
     return getLocationSettings;
   }
 
+  /** Returns the object with the settings used for calls to setIamPolicy. */
+  public UnaryCallSettings<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+    return setIamPolicySettings;
+  }
+
+  /** Returns the object with the settings used for calls to getIamPolicy. */
+  public UnaryCallSettings<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+    return getIamPolicySettings;
+  }
+
+  /** Returns the object with the settings used for calls to testIamPermissions. */
+  public UnaryCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsSettings() {
+    return testIamPermissionsSettings;
+  }
+
   public SequenceServiceStub createStub() throws IOException {
     if (getTransportChannelProvider()
         .getTransportName()
@@ -342,6 +367,9 @@ protected SequenceServiceStubSettings(Builder settingsBuilder) throws IOExceptio
     attemptStreamingSequenceSettings = settingsBuilder.attemptStreamingSequenceSettings().build();
     listLocationsSettings = settingsBuilder.listLocationsSettings().build();
     getLocationSettings = settingsBuilder.getLocationSettings().build();
+    setIamPolicySettings = settingsBuilder.setIamPolicySettings().build();
+    getIamPolicySettings = settingsBuilder.getIamPolicySettings().build();
+    testIamPermissionsSettings = settingsBuilder.testIamPermissionsSettings().build();
   }
 
   /** Builder for SequenceServiceStubSettings. */
@@ -363,6 +391,10 @@ public static class Builder extends StubSettings.Builder<SequenceServiceStubSett
             ListLocationsRequest, ListLocationsResponse, ListLocationsPagedResponse>
         listLocationsSettings;
     private final UnaryCallSettings.Builder<GetLocationRequest, Location> getLocationSettings;
+    private final UnaryCallSettings.Builder<SetIamPolicyRequest, Policy> setIamPolicySettings;
+    private final UnaryCallSettings.Builder<GetIamPolicyRequest, Policy> getIamPolicySettings;
+    private final UnaryCallSettings.Builder<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsSettings;
     private static final ImmutableMap<String, ImmutableSet<StatusCode.Code>>
         RETRYABLE_CODE_DEFINITIONS;
 
@@ -421,6 +453,9 @@ protected Builder(ClientContext clientContext) {
       attemptStreamingSequenceSettings = ServerStreamingCallSettings.newBuilder();
       listLocationsSettings = PagedCallSettings.newBuilder(LIST_LOCATIONS_PAGE_STR_FACT);
       getLocationSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      setIamPolicySettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      getIamPolicySettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      testIamPermissionsSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
 
       unaryMethodSettingsBuilders =
           ImmutableList.<UnaryCallSettings.Builder<?, ?>>of(
@@ -430,7 +465,10 @@ protected Builder(ClientContext clientContext) {
               getStreamingSequenceReportSettings,
               attemptSequenceSettings,
               listLocationsSettings,
-              getLocationSettings);
+              getLocationSettings,
+              setIamPolicySettings,
+              getIamPolicySettings,
+              testIamPermissionsSettings);
       initDefaults(this);
     }
 
@@ -445,6 +483,9 @@ protected Builder(SequenceServiceStubSettings settings) {
       attemptStreamingSequenceSettings = settings.attemptStreamingSequenceSettings.toBuilder();
       listLocationsSettings = settings.listLocationsSettings.toBuilder();
       getLocationSettings = settings.getLocationSettings.toBuilder();
+      setIamPolicySettings = settings.setIamPolicySettings.toBuilder();
+      getIamPolicySettings = settings.getIamPolicySettings.toBuilder();
+      testIamPermissionsSettings = settings.testIamPermissionsSettings.toBuilder();
 
       unaryMethodSettingsBuilders =
           ImmutableList.<UnaryCallSettings.Builder<?, ?>>of(
@@ -454,7 +495,10 @@ protected Builder(SequenceServiceStubSettings settings) {
               getStreamingSequenceReportSettings,
               attemptSequenceSettings,
               listLocationsSettings,
-              getLocationSettings);
+              getLocationSettings,
+              setIamPolicySettings,
+              getIamPolicySettings,
+              testIamPermissionsSettings);
     }
 
     private static Builder createDefault() {
@@ -524,6 +568,21 @@ private static Builder initDefaults(Builder builder) {
           .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_0_codes"))
           .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_0_params"));
 
+      builder
+          .setIamPolicySettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_0_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_0_params"));
+
+      builder
+          .getIamPolicySettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_0_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_0_params"));
+
+      builder
+          .testIamPermissionsSettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_0_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_0_params"));
+
       return builder;
     }
 
@@ -589,6 +648,22 @@ public UnaryCallSettings.Builder<GetLocationRequest, Location> getLocationSettin
       return getLocationSettings;
     }
 
+    /** Returns the builder for the settings used for calls to setIamPolicy. */
+    public UnaryCallSettings.Builder<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+      return setIamPolicySettings;
+    }
+
+    /** Returns the builder for the settings used for calls to getIamPolicy. */
+    public UnaryCallSettings.Builder<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+      return getIamPolicySettings;
+    }
+
+    /** Returns the builder for the settings used for calls to testIamPermissions. */
+    public UnaryCallSettings.Builder<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsSettings() {
+      return testIamPermissionsSettings;
+    }
+
     @Override
     public SequenceServiceStubSettings build() throws IOException {
       return new SequenceServiceStubSettings(this);
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/TestingStub.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/TestingStub.java
index 48ac98f3d2..bd8e9759ff 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/TestingStub.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/TestingStub.java
@@ -27,6 +27,11 @@
 import com.google.cloud.location.ListLocationsRequest;
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import com.google.showcase.v1beta1.CreateSessionRequest;
 import com.google.showcase.v1beta1.DeleteSessionRequest;
@@ -106,6 +111,19 @@ public UnaryCallable<GetLocationRequest, Location> getLocationCallable() {
     throw new UnsupportedOperationException("Not implemented: getLocationCallable()");
   }
 
+  public UnaryCallable<SetIamPolicyRequest, Policy> setIamPolicyCallable() {
+    throw new UnsupportedOperationException("Not implemented: setIamPolicyCallable()");
+  }
+
+  public UnaryCallable<GetIamPolicyRequest, Policy> getIamPolicyCallable() {
+    throw new UnsupportedOperationException("Not implemented: getIamPolicyCallable()");
+  }
+
+  public UnaryCallable<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsCallable() {
+    throw new UnsupportedOperationException("Not implemented: testIamPermissionsCallable()");
+  }
+
   @Override
   public abstract void close();
 }
diff --git a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/TestingStubSettings.java b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/TestingStubSettings.java
index decec2e84a..37bba7d806 100644
--- a/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/TestingStubSettings.java
+++ b/showcase/gapic-showcase/src/main/java/com/google/showcase/v1beta1/stub/TestingStubSettings.java
@@ -53,6 +53,11 @@
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Empty;
 import com.google.showcase.v1beta1.CreateSessionRequest;
 import com.google.showcase.v1beta1.DeleteSessionRequest;
@@ -131,6 +136,10 @@ public class TestingStubSettings extends StubSettings<TestingStubSettings> {
           ListLocationsRequest, ListLocationsResponse, ListLocationsPagedResponse>
       listLocationsSettings;
   private final UnaryCallSettings<GetLocationRequest, Location> getLocationSettings;
+  private final UnaryCallSettings<SetIamPolicyRequest, Policy> setIamPolicySettings;
+  private final UnaryCallSettings<GetIamPolicyRequest, Policy> getIamPolicySettings;
+  private final UnaryCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsSettings;
 
   private static final PagedListDescriptor<ListSessionsRequest, ListSessionsResponse, Session>
       LIST_SESSIONS_PAGE_STR_DESC =
@@ -344,6 +353,22 @@ public UnaryCallSettings<GetLocationRequest, Location> getLocationSettings() {
     return getLocationSettings;
   }
 
+  /** Returns the object with the settings used for calls to setIamPolicy. */
+  public UnaryCallSettings<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+    return setIamPolicySettings;
+  }
+
+  /** Returns the object with the settings used for calls to getIamPolicy. */
+  public UnaryCallSettings<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+    return getIamPolicySettings;
+  }
+
+  /** Returns the object with the settings used for calls to testIamPermissions. */
+  public UnaryCallSettings<TestIamPermissionsRequest, TestIamPermissionsResponse>
+      testIamPermissionsSettings() {
+    return testIamPermissionsSettings;
+  }
+
   public TestingStub createStub() throws IOException {
     if (getTransportChannelProvider()
         .getTransportName()
@@ -458,6 +483,9 @@ protected TestingStubSettings(Builder settingsBuilder) throws IOException {
     verifyTestSettings = settingsBuilder.verifyTestSettings().build();
     listLocationsSettings = settingsBuilder.listLocationsSettings().build();
     getLocationSettings = settingsBuilder.getLocationSettings().build();
+    setIamPolicySettings = settingsBuilder.setIamPolicySettings().build();
+    getIamPolicySettings = settingsBuilder.getIamPolicySettings().build();
+    testIamPermissionsSettings = settingsBuilder.testIamPermissionsSettings().build();
   }
 
   /** Builder for TestingStubSettings. */
@@ -481,6 +509,10 @@ public static class Builder extends StubSettings.Builder<TestingStubSettings, Bu
             ListLocationsRequest, ListLocationsResponse, ListLocationsPagedResponse>
         listLocationsSettings;
     private final UnaryCallSettings.Builder<GetLocationRequest, Location> getLocationSettings;
+    private final UnaryCallSettings.Builder<SetIamPolicyRequest, Policy> setIamPolicySettings;
+    private final UnaryCallSettings.Builder<GetIamPolicyRequest, Policy> getIamPolicySettings;
+    private final UnaryCallSettings.Builder<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsSettings;
     private static final ImmutableMap<String, ImmutableSet<StatusCode.Code>>
         RETRYABLE_CODE_DEFINITIONS;
 
@@ -518,6 +550,9 @@ protected Builder(ClientContext clientContext) {
       verifyTestSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
       listLocationsSettings = PagedCallSettings.newBuilder(LIST_LOCATIONS_PAGE_STR_FACT);
       getLocationSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      setIamPolicySettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      getIamPolicySettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
+      testIamPermissionsSettings = UnaryCallSettings.newUnaryCallSettingsBuilder();
 
       unaryMethodSettingsBuilders =
           ImmutableList.<UnaryCallSettings.Builder<?, ?>>of(
@@ -530,7 +565,10 @@ protected Builder(ClientContext clientContext) {
               deleteTestSettings,
               verifyTestSettings,
               listLocationsSettings,
-              getLocationSettings);
+              getLocationSettings,
+              setIamPolicySettings,
+              getIamPolicySettings,
+              testIamPermissionsSettings);
       initDefaults(this);
     }
 
@@ -547,6 +585,9 @@ protected Builder(TestingStubSettings settings) {
       verifyTestSettings = settings.verifyTestSettings.toBuilder();
       listLocationsSettings = settings.listLocationsSettings.toBuilder();
       getLocationSettings = settings.getLocationSettings.toBuilder();
+      setIamPolicySettings = settings.setIamPolicySettings.toBuilder();
+      getIamPolicySettings = settings.getIamPolicySettings.toBuilder();
+      testIamPermissionsSettings = settings.testIamPermissionsSettings.toBuilder();
 
       unaryMethodSettingsBuilders =
           ImmutableList.<UnaryCallSettings.Builder<?, ?>>of(
@@ -559,7 +600,10 @@ protected Builder(TestingStubSettings settings) {
               deleteTestSettings,
               verifyTestSettings,
               listLocationsSettings,
-              getLocationSettings);
+              getLocationSettings,
+              setIamPolicySettings,
+              getIamPolicySettings,
+              testIamPermissionsSettings);
     }
 
     private static Builder createDefault() {
@@ -639,6 +683,21 @@ private static Builder initDefaults(Builder builder) {
           .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_codes"))
           .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_params"));
 
+      builder
+          .setIamPolicySettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_params"));
+
+      builder
+          .getIamPolicySettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_params"));
+
+      builder
+          .testIamPermissionsSettings()
+          .setRetryableCodes(RETRYABLE_CODE_DEFINITIONS.get("no_retry_codes"))
+          .setRetrySettings(RETRY_PARAM_DEFINITIONS.get("no_retry_params"));
+
       return builder;
     }
 
@@ -713,6 +772,22 @@ public UnaryCallSettings.Builder<GetLocationRequest, Location> getLocationSettin
       return getLocationSettings;
     }
 
+    /** Returns the builder for the settings used for calls to setIamPolicy. */
+    public UnaryCallSettings.Builder<SetIamPolicyRequest, Policy> setIamPolicySettings() {
+      return setIamPolicySettings;
+    }
+
+    /** Returns the builder for the settings used for calls to getIamPolicy. */
+    public UnaryCallSettings.Builder<GetIamPolicyRequest, Policy> getIamPolicySettings() {
+      return getIamPolicySettings;
+    }
+
+    /** Returns the builder for the settings used for calls to testIamPermissions. */
+    public UnaryCallSettings.Builder<TestIamPermissionsRequest, TestIamPermissionsResponse>
+        testIamPermissionsSettings() {
+      return testIamPermissionsSettings;
+    }
+
     @Override
     public TestingStubSettings build() throws IOException {
       return new TestingStubSettings(this);
diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/ComplianceClientHttpJsonTest.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/ComplianceClientHttpJsonTest.java
index 14bd0a271a..db60b8419c 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/ComplianceClientHttpJsonTest.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/ComplianceClientHttpJsonTest.java
@@ -32,10 +32,20 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.AuditConfig;
+import com.google.iam.v1.Binding;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Any;
 import com.google.protobuf.ByteString;
+import com.google.protobuf.FieldMask;
 import com.google.showcase.v1beta1.stub.HttpJsonComplianceStub;
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
@@ -1040,4 +1050,178 @@ public void getLocationExceptionTest() throws Exception {
       // Expected exception.
     }
   }
+
+  @Test
+  public void setIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockService.addResponse(expectedResponse);
+
+    SetIamPolicyRequest request =
+        SetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setPolicy(Policy.newBuilder().build())
+            .setUpdateMask(FieldMask.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.setIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<String> actualRequests = mockService.getRequestPaths();
+    Assert.assertEquals(1, actualRequests.size());
+
+    String apiClientHeaderKey =
+        mockService
+            .getRequestHeaders()
+            .get(ApiClientHeaderProvider.getDefaultApiClientHeaderKey())
+            .iterator()
+            .next();
+    Assert.assertTrue(
+        GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
+            .matcher(apiClientHeaderKey)
+            .matches());
+  }
+
+  @Test
+  public void setIamPolicyExceptionTest() throws Exception {
+    ApiException exception =
+        ApiExceptionFactory.createException(
+            new Exception(), FakeStatusCode.of(StatusCode.Code.INVALID_ARGUMENT), false);
+    mockService.addException(exception);
+
+    try {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      client.setIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void getIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockService.addResponse(expectedResponse);
+
+    GetIamPolicyRequest request =
+        GetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setOptions(GetPolicyOptions.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.getIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<String> actualRequests = mockService.getRequestPaths();
+    Assert.assertEquals(1, actualRequests.size());
+
+    String apiClientHeaderKey =
+        mockService
+            .getRequestHeaders()
+            .get(ApiClientHeaderProvider.getDefaultApiClientHeaderKey())
+            .iterator()
+            .next();
+    Assert.assertTrue(
+        GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
+            .matcher(apiClientHeaderKey)
+            .matches());
+  }
+
+  @Test
+  public void getIamPolicyExceptionTest() throws Exception {
+    ApiException exception =
+        ApiExceptionFactory.createException(
+            new Exception(), FakeStatusCode.of(StatusCode.Code.INVALID_ARGUMENT), false);
+    mockService.addException(exception);
+
+    try {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      client.getIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void testIamPermissionsTest() throws Exception {
+    TestIamPermissionsResponse expectedResponse =
+        TestIamPermissionsResponse.newBuilder().addAllPermissions(new ArrayList<String>()).build();
+    mockService.addResponse(expectedResponse);
+
+    TestIamPermissionsRequest request =
+        TestIamPermissionsRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .addAllPermissions(new ArrayList<String>())
+            .build();
+
+    TestIamPermissionsResponse actualResponse = client.testIamPermissions(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<String> actualRequests = mockService.getRequestPaths();
+    Assert.assertEquals(1, actualRequests.size());
+
+    String apiClientHeaderKey =
+        mockService
+            .getRequestHeaders()
+            .get(ApiClientHeaderProvider.getDefaultApiClientHeaderKey())
+            .iterator()
+            .next();
+    Assert.assertTrue(
+        GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
+            .matcher(apiClientHeaderKey)
+            .matches());
+  }
+
+  @Test
+  public void testIamPermissionsExceptionTest() throws Exception {
+    ApiException exception =
+        ApiExceptionFactory.createException(
+            new Exception(), FakeStatusCode.of(StatusCode.Code.INVALID_ARGUMENT), false);
+    mockService.addException(exception);
+
+    try {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      client.testIamPermissions(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
 }
diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/ComplianceClientTest.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/ComplianceClientTest.java
index b7b7c00a3d..efed7fd2eb 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/ComplianceClientTest.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/ComplianceClientTest.java
@@ -30,10 +30,21 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.AuditConfig;
+import com.google.iam.v1.Binding;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.AbstractMessage;
 import com.google.protobuf.Any;
+import com.google.protobuf.ByteString;
+import com.google.protobuf.FieldMask;
 import io.grpc.StatusRuntimeException;
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
@@ -49,6 +60,7 @@
 @Generated("by gapic-generator-java")
 public class ComplianceClientTest {
   private static MockCompliance mockCompliance;
+  private static MockIAMPolicy mockIAMPolicy;
   private static MockLocations mockLocations;
   private static MockServiceHelper mockServiceHelper;
   private LocalChannelProvider channelProvider;
@@ -58,10 +70,11 @@ public class ComplianceClientTest {
   public static void startStaticServer() {
     mockCompliance = new MockCompliance();
     mockLocations = new MockLocations();
+    mockIAMPolicy = new MockIAMPolicy();
     mockServiceHelper =
         new MockServiceHelper(
             UUID.randomUUID().toString(),
-            Arrays.<MockGrpcService>asList(mockCompliance, mockLocations));
+            Arrays.<MockGrpcService>asList(mockCompliance, mockLocations, mockIAMPolicy));
     mockServiceHelper.start();
   }
 
@@ -850,4 +863,164 @@ public void getLocationExceptionTest() throws Exception {
       // Expected exception.
     }
   }
+
+  @Test
+  public void setIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockIAMPolicy.addResponse(expectedResponse);
+
+    SetIamPolicyRequest request =
+        SetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setPolicy(Policy.newBuilder().build())
+            .setUpdateMask(FieldMask.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.setIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockIAMPolicy.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    SetIamPolicyRequest actualRequest = ((SetIamPolicyRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getResource(), actualRequest.getResource());
+    Assert.assertEquals(request.getPolicy(), actualRequest.getPolicy());
+    Assert.assertEquals(request.getUpdateMask(), actualRequest.getUpdateMask());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void setIamPolicyExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockIAMPolicy.addException(exception);
+
+    try {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      client.setIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void getIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockIAMPolicy.addResponse(expectedResponse);
+
+    GetIamPolicyRequest request =
+        GetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setOptions(GetPolicyOptions.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.getIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockIAMPolicy.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    GetIamPolicyRequest actualRequest = ((GetIamPolicyRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getResource(), actualRequest.getResource());
+    Assert.assertEquals(request.getOptions(), actualRequest.getOptions());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void getIamPolicyExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockIAMPolicy.addException(exception);
+
+    try {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      client.getIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void testIamPermissionsTest() throws Exception {
+    TestIamPermissionsResponse expectedResponse =
+        TestIamPermissionsResponse.newBuilder().addAllPermissions(new ArrayList<String>()).build();
+    mockIAMPolicy.addResponse(expectedResponse);
+
+    TestIamPermissionsRequest request =
+        TestIamPermissionsRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .addAllPermissions(new ArrayList<String>())
+            .build();
+
+    TestIamPermissionsResponse actualResponse = client.testIamPermissions(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockIAMPolicy.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    TestIamPermissionsRequest actualRequest = ((TestIamPermissionsRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getResource(), actualRequest.getResource());
+    Assert.assertEquals(request.getPermissionsList(), actualRequest.getPermissionsList());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void testIamPermissionsExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockIAMPolicy.addException(exception);
+
+    try {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      client.testIamPermissions(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
 }
diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/EchoClientHttpJsonTest.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/EchoClientHttpJsonTest.java
index 908fd142a6..98b26c3ef6 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/EchoClientHttpJsonTest.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/EchoClientHttpJsonTest.java
@@ -34,9 +34,19 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.AuditConfig;
+import com.google.iam.v1.Binding;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.Operation;
 import com.google.protobuf.Any;
+import com.google.protobuf.ByteString;
 import com.google.protobuf.Duration;
+import com.google.protobuf.FieldMask;
 import com.google.showcase.v1beta1.stub.HttpJsonEchoStub;
 import java.io.IOException;
 import java.util.ArrayList;
@@ -550,4 +560,178 @@ public void getLocationExceptionTest() throws Exception {
       // Expected exception.
     }
   }
+
+  @Test
+  public void setIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockService.addResponse(expectedResponse);
+
+    SetIamPolicyRequest request =
+        SetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setPolicy(Policy.newBuilder().build())
+            .setUpdateMask(FieldMask.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.setIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<String> actualRequests = mockService.getRequestPaths();
+    Assert.assertEquals(1, actualRequests.size());
+
+    String apiClientHeaderKey =
+        mockService
+            .getRequestHeaders()
+            .get(ApiClientHeaderProvider.getDefaultApiClientHeaderKey())
+            .iterator()
+            .next();
+    Assert.assertTrue(
+        GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
+            .matcher(apiClientHeaderKey)
+            .matches());
+  }
+
+  @Test
+  public void setIamPolicyExceptionTest() throws Exception {
+    ApiException exception =
+        ApiExceptionFactory.createException(
+            new Exception(), FakeStatusCode.of(StatusCode.Code.INVALID_ARGUMENT), false);
+    mockService.addException(exception);
+
+    try {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      client.setIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void getIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockService.addResponse(expectedResponse);
+
+    GetIamPolicyRequest request =
+        GetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setOptions(GetPolicyOptions.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.getIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<String> actualRequests = mockService.getRequestPaths();
+    Assert.assertEquals(1, actualRequests.size());
+
+    String apiClientHeaderKey =
+        mockService
+            .getRequestHeaders()
+            .get(ApiClientHeaderProvider.getDefaultApiClientHeaderKey())
+            .iterator()
+            .next();
+    Assert.assertTrue(
+        GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
+            .matcher(apiClientHeaderKey)
+            .matches());
+  }
+
+  @Test
+  public void getIamPolicyExceptionTest() throws Exception {
+    ApiException exception =
+        ApiExceptionFactory.createException(
+            new Exception(), FakeStatusCode.of(StatusCode.Code.INVALID_ARGUMENT), false);
+    mockService.addException(exception);
+
+    try {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      client.getIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void testIamPermissionsTest() throws Exception {
+    TestIamPermissionsResponse expectedResponse =
+        TestIamPermissionsResponse.newBuilder().addAllPermissions(new ArrayList<String>()).build();
+    mockService.addResponse(expectedResponse);
+
+    TestIamPermissionsRequest request =
+        TestIamPermissionsRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .addAllPermissions(new ArrayList<String>())
+            .build();
+
+    TestIamPermissionsResponse actualResponse = client.testIamPermissions(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<String> actualRequests = mockService.getRequestPaths();
+    Assert.assertEquals(1, actualRequests.size());
+
+    String apiClientHeaderKey =
+        mockService
+            .getRequestHeaders()
+            .get(ApiClientHeaderProvider.getDefaultApiClientHeaderKey())
+            .iterator()
+            .next();
+    Assert.assertTrue(
+        GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
+            .matcher(apiClientHeaderKey)
+            .matches());
+  }
+
+  @Test
+  public void testIamPermissionsExceptionTest() throws Exception {
+    ApiException exception =
+        ApiExceptionFactory.createException(
+            new Exception(), FakeStatusCode.of(StatusCode.Code.INVALID_ARGUMENT), false);
+    mockService.addException(exception);
+
+    try {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      client.testIamPermissions(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
 }
diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/EchoClientTest.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/EchoClientTest.java
index dfce67ccc0..9c0bcba1b3 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/EchoClientTest.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/EchoClientTest.java
@@ -38,10 +38,20 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.AuditConfig;
+import com.google.iam.v1.Binding;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.Operation;
 import com.google.protobuf.AbstractMessage;
 import com.google.protobuf.Any;
+import com.google.protobuf.ByteString;
 import com.google.protobuf.Duration;
+import com.google.protobuf.FieldMask;
 import com.google.rpc.Status;
 import io.grpc.StatusRuntimeException;
 import java.io.IOException;
@@ -64,6 +74,7 @@
 @Generated("by gapic-generator-java")
 public class EchoClientTest {
   private static MockEcho mockEcho;
+  private static MockIAMPolicy mockIAMPolicy;
   private static MockLocations mockLocations;
   private static MockServiceHelper mockServiceHelper;
   private LocalChannelProvider channelProvider;
@@ -73,9 +84,11 @@ public class EchoClientTest {
   public static void startStaticServer() {
     mockEcho = new MockEcho();
     mockLocations = new MockLocations();
+    mockIAMPolicy = new MockIAMPolicy();
     mockServiceHelper =
         new MockServiceHelper(
-            UUID.randomUUID().toString(), Arrays.<MockGrpcService>asList(mockEcho, mockLocations));
+            UUID.randomUUID().toString(),
+            Arrays.<MockGrpcService>asList(mockEcho, mockLocations, mockIAMPolicy));
     mockServiceHelper.start();
   }
 
@@ -670,4 +683,164 @@ public void getLocationExceptionTest() throws Exception {
       // Expected exception.
     }
   }
+
+  @Test
+  public void setIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockIAMPolicy.addResponse(expectedResponse);
+
+    SetIamPolicyRequest request =
+        SetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setPolicy(Policy.newBuilder().build())
+            .setUpdateMask(FieldMask.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.setIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockIAMPolicy.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    SetIamPolicyRequest actualRequest = ((SetIamPolicyRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getResource(), actualRequest.getResource());
+    Assert.assertEquals(request.getPolicy(), actualRequest.getPolicy());
+    Assert.assertEquals(request.getUpdateMask(), actualRequest.getUpdateMask());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void setIamPolicyExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockIAMPolicy.addException(exception);
+
+    try {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      client.setIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void getIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockIAMPolicy.addResponse(expectedResponse);
+
+    GetIamPolicyRequest request =
+        GetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setOptions(GetPolicyOptions.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.getIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockIAMPolicy.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    GetIamPolicyRequest actualRequest = ((GetIamPolicyRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getResource(), actualRequest.getResource());
+    Assert.assertEquals(request.getOptions(), actualRequest.getOptions());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void getIamPolicyExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockIAMPolicy.addException(exception);
+
+    try {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      client.getIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void testIamPermissionsTest() throws Exception {
+    TestIamPermissionsResponse expectedResponse =
+        TestIamPermissionsResponse.newBuilder().addAllPermissions(new ArrayList<String>()).build();
+    mockIAMPolicy.addResponse(expectedResponse);
+
+    TestIamPermissionsRequest request =
+        TestIamPermissionsRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .addAllPermissions(new ArrayList<String>())
+            .build();
+
+    TestIamPermissionsResponse actualResponse = client.testIamPermissions(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockIAMPolicy.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    TestIamPermissionsRequest actualRequest = ((TestIamPermissionsRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getResource(), actualRequest.getResource());
+    Assert.assertEquals(request.getPermissionsList(), actualRequest.getPermissionsList());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void testIamPermissionsExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockIAMPolicy.addException(exception);
+
+    try {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      client.testIamPermissions(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
 }
diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/IdentityClientHttpJsonTest.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/IdentityClientHttpJsonTest.java
index 89f3a1f93c..4c5ae45c07 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/IdentityClientHttpJsonTest.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/IdentityClientHttpJsonTest.java
@@ -33,12 +33,22 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.AuditConfig;
+import com.google.iam.v1.Binding;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Any;
+import com.google.protobuf.ByteString;
 import com.google.protobuf.Empty;
 import com.google.protobuf.FieldMask;
 import com.google.protobuf.Timestamp;
 import com.google.showcase.v1beta1.stub.HttpJsonIdentityStub;
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
@@ -640,4 +650,178 @@ public void getLocationExceptionTest() throws Exception {
       // Expected exception.
     }
   }
+
+  @Test
+  public void setIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockService.addResponse(expectedResponse);
+
+    SetIamPolicyRequest request =
+        SetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setPolicy(Policy.newBuilder().build())
+            .setUpdateMask(FieldMask.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.setIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<String> actualRequests = mockService.getRequestPaths();
+    Assert.assertEquals(1, actualRequests.size());
+
+    String apiClientHeaderKey =
+        mockService
+            .getRequestHeaders()
+            .get(ApiClientHeaderProvider.getDefaultApiClientHeaderKey())
+            .iterator()
+            .next();
+    Assert.assertTrue(
+        GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
+            .matcher(apiClientHeaderKey)
+            .matches());
+  }
+
+  @Test
+  public void setIamPolicyExceptionTest() throws Exception {
+    ApiException exception =
+        ApiExceptionFactory.createException(
+            new Exception(), FakeStatusCode.of(StatusCode.Code.INVALID_ARGUMENT), false);
+    mockService.addException(exception);
+
+    try {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      client.setIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void getIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockService.addResponse(expectedResponse);
+
+    GetIamPolicyRequest request =
+        GetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setOptions(GetPolicyOptions.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.getIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<String> actualRequests = mockService.getRequestPaths();
+    Assert.assertEquals(1, actualRequests.size());
+
+    String apiClientHeaderKey =
+        mockService
+            .getRequestHeaders()
+            .get(ApiClientHeaderProvider.getDefaultApiClientHeaderKey())
+            .iterator()
+            .next();
+    Assert.assertTrue(
+        GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
+            .matcher(apiClientHeaderKey)
+            .matches());
+  }
+
+  @Test
+  public void getIamPolicyExceptionTest() throws Exception {
+    ApiException exception =
+        ApiExceptionFactory.createException(
+            new Exception(), FakeStatusCode.of(StatusCode.Code.INVALID_ARGUMENT), false);
+    mockService.addException(exception);
+
+    try {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      client.getIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void testIamPermissionsTest() throws Exception {
+    TestIamPermissionsResponse expectedResponse =
+        TestIamPermissionsResponse.newBuilder().addAllPermissions(new ArrayList<String>()).build();
+    mockService.addResponse(expectedResponse);
+
+    TestIamPermissionsRequest request =
+        TestIamPermissionsRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .addAllPermissions(new ArrayList<String>())
+            .build();
+
+    TestIamPermissionsResponse actualResponse = client.testIamPermissions(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<String> actualRequests = mockService.getRequestPaths();
+    Assert.assertEquals(1, actualRequests.size());
+
+    String apiClientHeaderKey =
+        mockService
+            .getRequestHeaders()
+            .get(ApiClientHeaderProvider.getDefaultApiClientHeaderKey())
+            .iterator()
+            .next();
+    Assert.assertTrue(
+        GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
+            .matcher(apiClientHeaderKey)
+            .matches());
+  }
+
+  @Test
+  public void testIamPermissionsExceptionTest() throws Exception {
+    ApiException exception =
+        ApiExceptionFactory.createException(
+            new Exception(), FakeStatusCode.of(StatusCode.Code.INVALID_ARGUMENT), false);
+    mockService.addException(exception);
+
+    try {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      client.testIamPermissions(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
 }
diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/IdentityClientTest.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/IdentityClientTest.java
index d94f41876c..348fad29c6 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/IdentityClientTest.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/IdentityClientTest.java
@@ -31,13 +31,23 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.AuditConfig;
+import com.google.iam.v1.Binding;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.AbstractMessage;
 import com.google.protobuf.Any;
+import com.google.protobuf.ByteString;
 import com.google.protobuf.Empty;
 import com.google.protobuf.FieldMask;
 import com.google.protobuf.Timestamp;
 import io.grpc.StatusRuntimeException;
 import java.io.IOException;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
@@ -52,6 +62,7 @@
 
 @Generated("by gapic-generator-java")
 public class IdentityClientTest {
+  private static MockIAMPolicy mockIAMPolicy;
   private static MockIdentity mockIdentity;
   private static MockLocations mockLocations;
   private static MockServiceHelper mockServiceHelper;
@@ -62,10 +73,11 @@ public class IdentityClientTest {
   public static void startStaticServer() {
     mockIdentity = new MockIdentity();
     mockLocations = new MockLocations();
+    mockIAMPolicy = new MockIAMPolicy();
     mockServiceHelper =
         new MockServiceHelper(
             UUID.randomUUID().toString(),
-            Arrays.<MockGrpcService>asList(mockIdentity, mockLocations));
+            Arrays.<MockGrpcService>asList(mockIdentity, mockLocations, mockIAMPolicy));
     mockServiceHelper.start();
   }
 
@@ -570,4 +582,164 @@ public void getLocationExceptionTest() throws Exception {
       // Expected exception.
     }
   }
+
+  @Test
+  public void setIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockIAMPolicy.addResponse(expectedResponse);
+
+    SetIamPolicyRequest request =
+        SetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setPolicy(Policy.newBuilder().build())
+            .setUpdateMask(FieldMask.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.setIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockIAMPolicy.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    SetIamPolicyRequest actualRequest = ((SetIamPolicyRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getResource(), actualRequest.getResource());
+    Assert.assertEquals(request.getPolicy(), actualRequest.getPolicy());
+    Assert.assertEquals(request.getUpdateMask(), actualRequest.getUpdateMask());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void setIamPolicyExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockIAMPolicy.addException(exception);
+
+    try {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      client.setIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void getIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockIAMPolicy.addResponse(expectedResponse);
+
+    GetIamPolicyRequest request =
+        GetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setOptions(GetPolicyOptions.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.getIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockIAMPolicy.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    GetIamPolicyRequest actualRequest = ((GetIamPolicyRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getResource(), actualRequest.getResource());
+    Assert.assertEquals(request.getOptions(), actualRequest.getOptions());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void getIamPolicyExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockIAMPolicy.addException(exception);
+
+    try {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      client.getIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void testIamPermissionsTest() throws Exception {
+    TestIamPermissionsResponse expectedResponse =
+        TestIamPermissionsResponse.newBuilder().addAllPermissions(new ArrayList<String>()).build();
+    mockIAMPolicy.addResponse(expectedResponse);
+
+    TestIamPermissionsRequest request =
+        TestIamPermissionsRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .addAllPermissions(new ArrayList<String>())
+            .build();
+
+    TestIamPermissionsResponse actualResponse = client.testIamPermissions(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockIAMPolicy.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    TestIamPermissionsRequest actualRequest = ((TestIamPermissionsRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getResource(), actualRequest.getResource());
+    Assert.assertEquals(request.getPermissionsList(), actualRequest.getPermissionsList());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void testIamPermissionsExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockIAMPolicy.addException(exception);
+
+    try {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      client.testIamPermissions(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
 }
diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/MessagingClientHttpJsonTest.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/MessagingClientHttpJsonTest.java
index dcea965000..a630a83e64 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/MessagingClientHttpJsonTest.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/MessagingClientHttpJsonTest.java
@@ -34,6 +34,14 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.AuditConfig;
+import com.google.iam.v1.Binding;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.Operation;
 import com.google.protobuf.Any;
 import com.google.protobuf.ByteString;
@@ -1768,4 +1776,178 @@ public void getLocationExceptionTest() throws Exception {
       // Expected exception.
     }
   }
+
+  @Test
+  public void setIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockService.addResponse(expectedResponse);
+
+    SetIamPolicyRequest request =
+        SetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setPolicy(Policy.newBuilder().build())
+            .setUpdateMask(FieldMask.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.setIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<String> actualRequests = mockService.getRequestPaths();
+    Assert.assertEquals(1, actualRequests.size());
+
+    String apiClientHeaderKey =
+        mockService
+            .getRequestHeaders()
+            .get(ApiClientHeaderProvider.getDefaultApiClientHeaderKey())
+            .iterator()
+            .next();
+    Assert.assertTrue(
+        GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
+            .matcher(apiClientHeaderKey)
+            .matches());
+  }
+
+  @Test
+  public void setIamPolicyExceptionTest() throws Exception {
+    ApiException exception =
+        ApiExceptionFactory.createException(
+            new Exception(), FakeStatusCode.of(StatusCode.Code.INVALID_ARGUMENT), false);
+    mockService.addException(exception);
+
+    try {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      client.setIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void getIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockService.addResponse(expectedResponse);
+
+    GetIamPolicyRequest request =
+        GetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setOptions(GetPolicyOptions.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.getIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<String> actualRequests = mockService.getRequestPaths();
+    Assert.assertEquals(1, actualRequests.size());
+
+    String apiClientHeaderKey =
+        mockService
+            .getRequestHeaders()
+            .get(ApiClientHeaderProvider.getDefaultApiClientHeaderKey())
+            .iterator()
+            .next();
+    Assert.assertTrue(
+        GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
+            .matcher(apiClientHeaderKey)
+            .matches());
+  }
+
+  @Test
+  public void getIamPolicyExceptionTest() throws Exception {
+    ApiException exception =
+        ApiExceptionFactory.createException(
+            new Exception(), FakeStatusCode.of(StatusCode.Code.INVALID_ARGUMENT), false);
+    mockService.addException(exception);
+
+    try {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      client.getIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void testIamPermissionsTest() throws Exception {
+    TestIamPermissionsResponse expectedResponse =
+        TestIamPermissionsResponse.newBuilder().addAllPermissions(new ArrayList<String>()).build();
+    mockService.addResponse(expectedResponse);
+
+    TestIamPermissionsRequest request =
+        TestIamPermissionsRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .addAllPermissions(new ArrayList<String>())
+            .build();
+
+    TestIamPermissionsResponse actualResponse = client.testIamPermissions(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<String> actualRequests = mockService.getRequestPaths();
+    Assert.assertEquals(1, actualRequests.size());
+
+    String apiClientHeaderKey =
+        mockService
+            .getRequestHeaders()
+            .get(ApiClientHeaderProvider.getDefaultApiClientHeaderKey())
+            .iterator()
+            .next();
+    Assert.assertTrue(
+        GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
+            .matcher(apiClientHeaderKey)
+            .matches());
+  }
+
+  @Test
+  public void testIamPermissionsExceptionTest() throws Exception {
+    ApiException exception =
+        ApiExceptionFactory.createException(
+            new Exception(), FakeStatusCode.of(StatusCode.Code.INVALID_ARGUMENT), false);
+    mockService.addException(exception);
+
+    try {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      client.testIamPermissions(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
 }
diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/MessagingClientTest.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/MessagingClientTest.java
index 20eab215c8..4aeac6d256 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/MessagingClientTest.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/MessagingClientTest.java
@@ -38,6 +38,14 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.AuditConfig;
+import com.google.iam.v1.Binding;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.longrunning.Operation;
 import com.google.protobuf.AbstractMessage;
 import com.google.protobuf.Any;
@@ -63,6 +71,7 @@
 
 @Generated("by gapic-generator-java")
 public class MessagingClientTest {
+  private static MockIAMPolicy mockIAMPolicy;
   private static MockLocations mockLocations;
   private static MockMessaging mockMessaging;
   private static MockServiceHelper mockServiceHelper;
@@ -73,10 +82,11 @@ public class MessagingClientTest {
   public static void startStaticServer() {
     mockMessaging = new MockMessaging();
     mockLocations = new MockLocations();
+    mockIAMPolicy = new MockIAMPolicy();
     mockServiceHelper =
         new MockServiceHelper(
             UUID.randomUUID().toString(),
-            Arrays.<MockGrpcService>asList(mockMessaging, mockLocations));
+            Arrays.<MockGrpcService>asList(mockMessaging, mockLocations, mockIAMPolicy));
     mockServiceHelper.start();
   }
 
@@ -1721,4 +1731,164 @@ public void getLocationExceptionTest() throws Exception {
       // Expected exception.
     }
   }
+
+  @Test
+  public void setIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockIAMPolicy.addResponse(expectedResponse);
+
+    SetIamPolicyRequest request =
+        SetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setPolicy(Policy.newBuilder().build())
+            .setUpdateMask(FieldMask.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.setIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockIAMPolicy.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    SetIamPolicyRequest actualRequest = ((SetIamPolicyRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getResource(), actualRequest.getResource());
+    Assert.assertEquals(request.getPolicy(), actualRequest.getPolicy());
+    Assert.assertEquals(request.getUpdateMask(), actualRequest.getUpdateMask());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void setIamPolicyExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockIAMPolicy.addException(exception);
+
+    try {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      client.setIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void getIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockIAMPolicy.addResponse(expectedResponse);
+
+    GetIamPolicyRequest request =
+        GetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setOptions(GetPolicyOptions.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.getIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockIAMPolicy.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    GetIamPolicyRequest actualRequest = ((GetIamPolicyRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getResource(), actualRequest.getResource());
+    Assert.assertEquals(request.getOptions(), actualRequest.getOptions());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void getIamPolicyExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockIAMPolicy.addException(exception);
+
+    try {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      client.getIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void testIamPermissionsTest() throws Exception {
+    TestIamPermissionsResponse expectedResponse =
+        TestIamPermissionsResponse.newBuilder().addAllPermissions(new ArrayList<String>()).build();
+    mockIAMPolicy.addResponse(expectedResponse);
+
+    TestIamPermissionsRequest request =
+        TestIamPermissionsRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .addAllPermissions(new ArrayList<String>())
+            .build();
+
+    TestIamPermissionsResponse actualResponse = client.testIamPermissions(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockIAMPolicy.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    TestIamPermissionsRequest actualRequest = ((TestIamPermissionsRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getResource(), actualRequest.getResource());
+    Assert.assertEquals(request.getPermissionsList(), actualRequest.getPermissionsList());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void testIamPermissionsExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockIAMPolicy.addException(exception);
+
+    try {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      client.testIamPermissions(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
 }
diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/SequenceServiceClientHttpJsonTest.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/SequenceServiceClientHttpJsonTest.java
index 88bb1605ea..1d564d1e16 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/SequenceServiceClientHttpJsonTest.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/SequenceServiceClientHttpJsonTest.java
@@ -32,8 +32,18 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.AuditConfig;
+import com.google.iam.v1.Binding;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Any;
+import com.google.protobuf.ByteString;
 import com.google.protobuf.Empty;
+import com.google.protobuf.FieldMask;
 import com.google.showcase.v1beta1.stub.HttpJsonSequenceServiceStub;
 import java.io.IOException;
 import java.util.ArrayList;
@@ -560,4 +570,178 @@ public void getLocationExceptionTest() throws Exception {
       // Expected exception.
     }
   }
+
+  @Test
+  public void setIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockService.addResponse(expectedResponse);
+
+    SetIamPolicyRequest request =
+        SetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setPolicy(Policy.newBuilder().build())
+            .setUpdateMask(FieldMask.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.setIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<String> actualRequests = mockService.getRequestPaths();
+    Assert.assertEquals(1, actualRequests.size());
+
+    String apiClientHeaderKey =
+        mockService
+            .getRequestHeaders()
+            .get(ApiClientHeaderProvider.getDefaultApiClientHeaderKey())
+            .iterator()
+            .next();
+    Assert.assertTrue(
+        GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
+            .matcher(apiClientHeaderKey)
+            .matches());
+  }
+
+  @Test
+  public void setIamPolicyExceptionTest() throws Exception {
+    ApiException exception =
+        ApiExceptionFactory.createException(
+            new Exception(), FakeStatusCode.of(StatusCode.Code.INVALID_ARGUMENT), false);
+    mockService.addException(exception);
+
+    try {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      client.setIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void getIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockService.addResponse(expectedResponse);
+
+    GetIamPolicyRequest request =
+        GetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setOptions(GetPolicyOptions.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.getIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<String> actualRequests = mockService.getRequestPaths();
+    Assert.assertEquals(1, actualRequests.size());
+
+    String apiClientHeaderKey =
+        mockService
+            .getRequestHeaders()
+            .get(ApiClientHeaderProvider.getDefaultApiClientHeaderKey())
+            .iterator()
+            .next();
+    Assert.assertTrue(
+        GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
+            .matcher(apiClientHeaderKey)
+            .matches());
+  }
+
+  @Test
+  public void getIamPolicyExceptionTest() throws Exception {
+    ApiException exception =
+        ApiExceptionFactory.createException(
+            new Exception(), FakeStatusCode.of(StatusCode.Code.INVALID_ARGUMENT), false);
+    mockService.addException(exception);
+
+    try {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      client.getIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void testIamPermissionsTest() throws Exception {
+    TestIamPermissionsResponse expectedResponse =
+        TestIamPermissionsResponse.newBuilder().addAllPermissions(new ArrayList<String>()).build();
+    mockService.addResponse(expectedResponse);
+
+    TestIamPermissionsRequest request =
+        TestIamPermissionsRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .addAllPermissions(new ArrayList<String>())
+            .build();
+
+    TestIamPermissionsResponse actualResponse = client.testIamPermissions(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<String> actualRequests = mockService.getRequestPaths();
+    Assert.assertEquals(1, actualRequests.size());
+
+    String apiClientHeaderKey =
+        mockService
+            .getRequestHeaders()
+            .get(ApiClientHeaderProvider.getDefaultApiClientHeaderKey())
+            .iterator()
+            .next();
+    Assert.assertTrue(
+        GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
+            .matcher(apiClientHeaderKey)
+            .matches());
+  }
+
+  @Test
+  public void testIamPermissionsExceptionTest() throws Exception {
+    ApiException exception =
+        ApiExceptionFactory.createException(
+            new Exception(), FakeStatusCode.of(StatusCode.Code.INVALID_ARGUMENT), false);
+    mockService.addException(exception);
+
+    try {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      client.testIamPermissions(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
 }
diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/SequenceServiceClientTest.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/SequenceServiceClientTest.java
index 15d3443e81..e1d372d833 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/SequenceServiceClientTest.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/SequenceServiceClientTest.java
@@ -33,9 +33,19 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.AuditConfig;
+import com.google.iam.v1.Binding;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.AbstractMessage;
 import com.google.protobuf.Any;
+import com.google.protobuf.ByteString;
 import com.google.protobuf.Empty;
+import com.google.protobuf.FieldMask;
 import io.grpc.StatusRuntimeException;
 import java.io.IOException;
 import java.util.ArrayList;
@@ -54,6 +64,7 @@
 
 @Generated("by gapic-generator-java")
 public class SequenceServiceClientTest {
+  private static MockIAMPolicy mockIAMPolicy;
   private static MockLocations mockLocations;
   private static MockSequenceService mockSequenceService;
   private static MockServiceHelper mockServiceHelper;
@@ -64,10 +75,11 @@ public class SequenceServiceClientTest {
   public static void startStaticServer() {
     mockSequenceService = new MockSequenceService();
     mockLocations = new MockLocations();
+    mockIAMPolicy = new MockIAMPolicy();
     mockServiceHelper =
         new MockServiceHelper(
             UUID.randomUUID().toString(),
-            Arrays.<MockGrpcService>asList(mockSequenceService, mockLocations));
+            Arrays.<MockGrpcService>asList(mockSequenceService, mockLocations, mockIAMPolicy));
     mockServiceHelper.start();
   }
 
@@ -547,4 +559,164 @@ public void getLocationExceptionTest() throws Exception {
       // Expected exception.
     }
   }
+
+  @Test
+  public void setIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockIAMPolicy.addResponse(expectedResponse);
+
+    SetIamPolicyRequest request =
+        SetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setPolicy(Policy.newBuilder().build())
+            .setUpdateMask(FieldMask.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.setIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockIAMPolicy.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    SetIamPolicyRequest actualRequest = ((SetIamPolicyRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getResource(), actualRequest.getResource());
+    Assert.assertEquals(request.getPolicy(), actualRequest.getPolicy());
+    Assert.assertEquals(request.getUpdateMask(), actualRequest.getUpdateMask());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void setIamPolicyExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockIAMPolicy.addException(exception);
+
+    try {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      client.setIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void getIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockIAMPolicy.addResponse(expectedResponse);
+
+    GetIamPolicyRequest request =
+        GetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setOptions(GetPolicyOptions.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.getIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockIAMPolicy.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    GetIamPolicyRequest actualRequest = ((GetIamPolicyRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getResource(), actualRequest.getResource());
+    Assert.assertEquals(request.getOptions(), actualRequest.getOptions());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void getIamPolicyExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockIAMPolicy.addException(exception);
+
+    try {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      client.getIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void testIamPermissionsTest() throws Exception {
+    TestIamPermissionsResponse expectedResponse =
+        TestIamPermissionsResponse.newBuilder().addAllPermissions(new ArrayList<String>()).build();
+    mockIAMPolicy.addResponse(expectedResponse);
+
+    TestIamPermissionsRequest request =
+        TestIamPermissionsRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .addAllPermissions(new ArrayList<String>())
+            .build();
+
+    TestIamPermissionsResponse actualResponse = client.testIamPermissions(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockIAMPolicy.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    TestIamPermissionsRequest actualRequest = ((TestIamPermissionsRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getResource(), actualRequest.getResource());
+    Assert.assertEquals(request.getPermissionsList(), actualRequest.getPermissionsList());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void testIamPermissionsExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockIAMPolicy.addException(exception);
+
+    try {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      client.testIamPermissions(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
 }
diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/TestingClientHttpJsonTest.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/TestingClientHttpJsonTest.java
index 10a408b18b..3a593c32fa 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/TestingClientHttpJsonTest.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/TestingClientHttpJsonTest.java
@@ -34,9 +34,18 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.AuditConfig;
+import com.google.iam.v1.Binding;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.Any;
 import com.google.protobuf.ByteString;
 import com.google.protobuf.Empty;
+import com.google.protobuf.FieldMask;
 import com.google.showcase.v1beta1.stub.HttpJsonTestingStub;
 import java.io.IOException;
 import java.util.ArrayList;
@@ -592,4 +601,178 @@ public void getLocationExceptionTest() throws Exception {
       // Expected exception.
     }
   }
+
+  @Test
+  public void setIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockService.addResponse(expectedResponse);
+
+    SetIamPolicyRequest request =
+        SetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setPolicy(Policy.newBuilder().build())
+            .setUpdateMask(FieldMask.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.setIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<String> actualRequests = mockService.getRequestPaths();
+    Assert.assertEquals(1, actualRequests.size());
+
+    String apiClientHeaderKey =
+        mockService
+            .getRequestHeaders()
+            .get(ApiClientHeaderProvider.getDefaultApiClientHeaderKey())
+            .iterator()
+            .next();
+    Assert.assertTrue(
+        GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
+            .matcher(apiClientHeaderKey)
+            .matches());
+  }
+
+  @Test
+  public void setIamPolicyExceptionTest() throws Exception {
+    ApiException exception =
+        ApiExceptionFactory.createException(
+            new Exception(), FakeStatusCode.of(StatusCode.Code.INVALID_ARGUMENT), false);
+    mockService.addException(exception);
+
+    try {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      client.setIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void getIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockService.addResponse(expectedResponse);
+
+    GetIamPolicyRequest request =
+        GetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setOptions(GetPolicyOptions.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.getIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<String> actualRequests = mockService.getRequestPaths();
+    Assert.assertEquals(1, actualRequests.size());
+
+    String apiClientHeaderKey =
+        mockService
+            .getRequestHeaders()
+            .get(ApiClientHeaderProvider.getDefaultApiClientHeaderKey())
+            .iterator()
+            .next();
+    Assert.assertTrue(
+        GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
+            .matcher(apiClientHeaderKey)
+            .matches());
+  }
+
+  @Test
+  public void getIamPolicyExceptionTest() throws Exception {
+    ApiException exception =
+        ApiExceptionFactory.createException(
+            new Exception(), FakeStatusCode.of(StatusCode.Code.INVALID_ARGUMENT), false);
+    mockService.addException(exception);
+
+    try {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      client.getIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void testIamPermissionsTest() throws Exception {
+    TestIamPermissionsResponse expectedResponse =
+        TestIamPermissionsResponse.newBuilder().addAllPermissions(new ArrayList<String>()).build();
+    mockService.addResponse(expectedResponse);
+
+    TestIamPermissionsRequest request =
+        TestIamPermissionsRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .addAllPermissions(new ArrayList<String>())
+            .build();
+
+    TestIamPermissionsResponse actualResponse = client.testIamPermissions(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<String> actualRequests = mockService.getRequestPaths();
+    Assert.assertEquals(1, actualRequests.size());
+
+    String apiClientHeaderKey =
+        mockService
+            .getRequestHeaders()
+            .get(ApiClientHeaderProvider.getDefaultApiClientHeaderKey())
+            .iterator()
+            .next();
+    Assert.assertTrue(
+        GaxHttpJsonProperties.getDefaultApiClientHeaderPattern()
+            .matcher(apiClientHeaderKey)
+            .matches());
+  }
+
+  @Test
+  public void testIamPermissionsExceptionTest() throws Exception {
+    ApiException exception =
+        ApiExceptionFactory.createException(
+            new Exception(), FakeStatusCode.of(StatusCode.Code.INVALID_ARGUMENT), false);
+    mockService.addException(exception);
+
+    try {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      client.testIamPermissions(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
 }
diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/TestingClientTest.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/TestingClientTest.java
index da33afcb02..3120f534ba 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/TestingClientTest.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/TestingClientTest.java
@@ -32,10 +32,19 @@
 import com.google.cloud.location.ListLocationsResponse;
 import com.google.cloud.location.Location;
 import com.google.common.collect.Lists;
+import com.google.iam.v1.AuditConfig;
+import com.google.iam.v1.Binding;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.protobuf.AbstractMessage;
 import com.google.protobuf.Any;
 import com.google.protobuf.ByteString;
 import com.google.protobuf.Empty;
+import com.google.protobuf.FieldMask;
 import io.grpc.StatusRuntimeException;
 import java.io.IOException;
 import java.util.ArrayList;
@@ -53,6 +62,7 @@
 
 @Generated("by gapic-generator-java")
 public class TestingClientTest {
+  private static MockIAMPolicy mockIAMPolicy;
   private static MockLocations mockLocations;
   private static MockServiceHelper mockServiceHelper;
   private static MockTesting mockTesting;
@@ -63,10 +73,11 @@ public class TestingClientTest {
   public static void startStaticServer() {
     mockTesting = new MockTesting();
     mockLocations = new MockLocations();
+    mockIAMPolicy = new MockIAMPolicy();
     mockServiceHelper =
         new MockServiceHelper(
             UUID.randomUUID().toString(),
-            Arrays.<MockGrpcService>asList(mockTesting, mockLocations));
+            Arrays.<MockGrpcService>asList(mockTesting, mockLocations, mockIAMPolicy));
     mockServiceHelper.start();
   }
 
@@ -541,4 +552,164 @@ public void getLocationExceptionTest() throws Exception {
       // Expected exception.
     }
   }
+
+  @Test
+  public void setIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockIAMPolicy.addResponse(expectedResponse);
+
+    SetIamPolicyRequest request =
+        SetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setPolicy(Policy.newBuilder().build())
+            .setUpdateMask(FieldMask.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.setIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockIAMPolicy.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    SetIamPolicyRequest actualRequest = ((SetIamPolicyRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getResource(), actualRequest.getResource());
+    Assert.assertEquals(request.getPolicy(), actualRequest.getPolicy());
+    Assert.assertEquals(request.getUpdateMask(), actualRequest.getUpdateMask());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void setIamPolicyExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockIAMPolicy.addException(exception);
+
+    try {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      client.setIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void getIamPolicyTest() throws Exception {
+    Policy expectedResponse =
+        Policy.newBuilder()
+            .setVersion(351608024)
+            .addAllBindings(new ArrayList<Binding>())
+            .addAllAuditConfigs(new ArrayList<AuditConfig>())
+            .setEtag(ByteString.EMPTY)
+            .build();
+    mockIAMPolicy.addResponse(expectedResponse);
+
+    GetIamPolicyRequest request =
+        GetIamPolicyRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .setOptions(GetPolicyOptions.newBuilder().build())
+            .build();
+
+    Policy actualResponse = client.getIamPolicy(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockIAMPolicy.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    GetIamPolicyRequest actualRequest = ((GetIamPolicyRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getResource(), actualRequest.getResource());
+    Assert.assertEquals(request.getOptions(), actualRequest.getOptions());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void getIamPolicyExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockIAMPolicy.addException(exception);
+
+    try {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      client.getIamPolicy(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
+
+  @Test
+  public void testIamPermissionsTest() throws Exception {
+    TestIamPermissionsResponse expectedResponse =
+        TestIamPermissionsResponse.newBuilder().addAllPermissions(new ArrayList<String>()).build();
+    mockIAMPolicy.addResponse(expectedResponse);
+
+    TestIamPermissionsRequest request =
+        TestIamPermissionsRequest.newBuilder()
+            .setResource(
+                BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                    .toString())
+            .addAllPermissions(new ArrayList<String>())
+            .build();
+
+    TestIamPermissionsResponse actualResponse = client.testIamPermissions(request);
+    Assert.assertEquals(expectedResponse, actualResponse);
+
+    List<AbstractMessage> actualRequests = mockIAMPolicy.getRequests();
+    Assert.assertEquals(1, actualRequests.size());
+    TestIamPermissionsRequest actualRequest = ((TestIamPermissionsRequest) actualRequests.get(0));
+
+    Assert.assertEquals(request.getResource(), actualRequest.getResource());
+    Assert.assertEquals(request.getPermissionsList(), actualRequest.getPermissionsList());
+    Assert.assertTrue(
+        channelProvider.isHeaderSent(
+            ApiClientHeaderProvider.getDefaultApiClientHeaderKey(),
+            GaxGrpcProperties.getDefaultApiClientHeaderPattern()));
+  }
+
+  @Test
+  public void testIamPermissionsExceptionTest() throws Exception {
+    StatusRuntimeException exception = new StatusRuntimeException(io.grpc.Status.INVALID_ARGUMENT);
+    mockIAMPolicy.addException(exception);
+
+    try {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      client.testIamPermissions(request);
+      Assert.fail("No exception raised");
+    } catch (InvalidArgumentException e) {
+      // Expected exception.
+    }
+  }
 }

From 5bf473b392016b5d1e6a26bc587ac883264afd68 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Tue, 20 Jun 2023 11:58:00 -0400
Subject: [PATCH 03/26] chore: Add IAM showcase tests

---
 showcase/gapic-showcase/pom.xml               |   5 +
 .../com/google/showcase/v1beta1/it/ITIam.java | 214 +++++++++++++++++-
 2 files changed, 215 insertions(+), 4 deletions(-)

diff --git a/showcase/gapic-showcase/pom.xml b/showcase/gapic-showcase/pom.xml
index 8663ade568..db54898790 100644
--- a/showcase/gapic-showcase/pom.xml
+++ b/showcase/gapic-showcase/pom.xml
@@ -229,5 +229,10 @@
       <classifier>testlib</classifier>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>com.google.api.grpc</groupId>
+      <artifactId>grpc-google-iam-v1</artifactId>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
 </project>
diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index bb6a297c0b..0ec484f770 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -15,14 +15,26 @@
  */
 package com.google.showcase.v1beta1.it;
 
+import static com.google.common.truth.Truth.assertThat;
+import static org.junit.Assert.assertThrows;
+
+import com.google.api.gax.rpc.InvalidArgumentException;
+import com.google.api.gax.rpc.NotFoundException;
+import com.google.common.collect.ImmutableList;
 import com.google.iam.v1.Binding;
+import com.google.iam.v1.GetIamPolicyRequest;
 import com.google.iam.v1.Policy;
 import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
 import com.google.showcase.v1beta1.EchoClient;
 import com.google.showcase.v1beta1.it.util.TestClientInitializer;
+import java.util.List;
+import java.util.UUID;
 import java.util.concurrent.TimeUnit;
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
+import org.junit.Test;
 
 public class ITIam {
   private static EchoClient grpcClient;
@@ -44,11 +56,205 @@ public static void destroyClients() throws InterruptedException {
         TestClientInitializer.AWAIT_TERMINATION_SECONDS, TimeUnit.SECONDS);
   }
 
+  @Test
   public void testGrpc_setIamPolicy() {
-    SetIamPolicyRequest policyRequest = SetIamPolicyRequest.newBuilder()
-            .setPolicy(
-                    Policy.newBuilder()
-                            .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers")))
+    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
+    Policy expectedPolicy =
+        Policy.newBuilder()
+            .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
+            .build();
+    SetIamPolicyRequest policyRequest =
+        SetIamPolicyRequest.newBuilder().setPolicy(expectedPolicy).setResource(resource).build();
+    Policy policy = grpcClient.setIamPolicy(policyRequest);
+    assertThat(policy).isEqualTo(expectedPolicy);
+  }
+
+  @Test
+  public void testHttpJson_setIamPolicy() {
+    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
+    Policy expectedPolicy =
+        Policy.newBuilder()
+            .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
+            .build();
+    SetIamPolicyRequest policyRequest =
+        SetIamPolicyRequest.newBuilder().setPolicy(expectedPolicy).setResource(resource).build();
+    Policy policy = httpjsonClient.setIamPolicy(policyRequest);
+    assertThat(policy).isEqualTo(expectedPolicy);
+  }
+
+  @Test
+  public void testGrpc_getIamPolicy() {
+    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
+    Policy expectedPolicy =
+        Policy.newBuilder()
+            .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
+            .build();
+    SetIamPolicyRequest policyRequest =
+        SetIamPolicyRequest.newBuilder().setPolicy(expectedPolicy).setResource(resource).build();
+    grpcClient.setIamPolicy(policyRequest);
+
+    Policy policy =
+        grpcClient.getIamPolicy(GetIamPolicyRequest.newBuilder().setResource(resource).build());
+    assertThat(policy).isEqualTo(expectedPolicy);
+  }
+
+  @Test
+  public void testHttpJson_getIamPolicy() {
+    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
+    Policy expectedPolicy =
+        Policy.newBuilder()
+            .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
             .build();
+    SetIamPolicyRequest policyRequest =
+        SetIamPolicyRequest.newBuilder().setPolicy(expectedPolicy).setResource(resource).build();
+    httpjsonClient.setIamPolicy(policyRequest);
+
+    Policy policy =
+        httpjsonClient.getIamPolicy(GetIamPolicyRequest.newBuilder().setResource(resource).build());
+    assertThat(policy).isEqualTo(expectedPolicy);
+  }
+
+  @Test
+  public void testGrpc_testIamPermissions() {
+    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
+    Policy expectedPolicy =
+        Policy.newBuilder()
+            .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
+            .build();
+    SetIamPolicyRequest policyRequest =
+        SetIamPolicyRequest.newBuilder().setPolicy(expectedPolicy).setResource(resource).build();
+    grpcClient.setIamPolicy(policyRequest);
+    List<String> permissions = ImmutableList.of("foo.create");
+    TestIamPermissionsResponse testIamPermissionsResponse =
+        grpcClient.testIamPermissions(
+            TestIamPermissionsRequest.newBuilder()
+                .setResource(resource)
+                .addAllPermissions(permissions)
+                .build());
+    assertThat(testIamPermissionsResponse.getPermissionsList())
+        .containsExactlyElementsIn(permissions);
+  }
+
+  @Test
+  public void testHttpJson_testIamPermissions() {
+    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
+    Policy expectedPolicy =
+        Policy.newBuilder()
+            .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
+            .build();
+    SetIamPolicyRequest policyRequest =
+        SetIamPolicyRequest.newBuilder().setPolicy(expectedPolicy).setResource(resource).build();
+    httpjsonClient.setIamPolicy(policyRequest);
+    List<String> permissions = ImmutableList.of("foo.create");
+    TestIamPermissionsResponse testIamPermissionsResponse =
+        httpjsonClient.testIamPermissions(
+            TestIamPermissionsRequest.newBuilder()
+                .setResource(resource)
+                .addAllPermissions(permissions)
+                .build());
+    assertThat(testIamPermissionsResponse.getPermissionsList())
+        .containsExactlyElementsIn(permissions);
+  }
+
+  @Test
+  public void testGrpc_getIamPolicy_doesNotExist() {
+    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
+    assertThrows(
+        NotFoundException.class,
+        () ->
+            grpcClient.getIamPolicy(
+                GetIamPolicyRequest.newBuilder().setResource(resource).build()));
+  }
+
+  @Test
+  public void testHttpJson_getIamPolicy_doesNotExist() {
+    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
+    assertThrows(
+        NotFoundException.class,
+        () ->
+            httpjsonClient.getIamPolicy(
+                GetIamPolicyRequest.newBuilder().setResource(resource).build()));
+  }
+
+  @Test
+  public void testGrpc_getIamPolicy_missingResource() {
+    assertThrows(
+        InvalidArgumentException.class,
+        () -> grpcClient.getIamPolicy(GetIamPolicyRequest.newBuilder().build()));
+  }
+
+  @Test
+  public void testHttpJson_getIamPolicy_missingResource() {
+    assertThrows(
+        InvalidArgumentException.class,
+        () -> httpjsonClient.getIamPolicy(GetIamPolicyRequest.newBuilder().build()));
+  }
+
+  @Test
+  public void testGrpc_setIamPolicy_missingResource() {
+    assertThrows(
+        InvalidArgumentException.class,
+        () -> grpcClient.setIamPolicy(SetIamPolicyRequest.newBuilder().build()));
+  }
+
+  @Test
+  public void testHttpJson_setIamPolicy_missingResource() {
+    assertThrows(
+        InvalidArgumentException.class,
+        () -> httpjsonClient.setIamPolicy(SetIamPolicyRequest.newBuilder().build()));
+  }
+
+  @Test
+  public void testGrpc_setIamPolicy_missingPolicy() {
+    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
+    assertThrows(
+        InvalidArgumentException.class,
+        () ->
+            grpcClient.setIamPolicy(
+                SetIamPolicyRequest.newBuilder().setResource(resource).build()));
+  }
+
+  @Test
+  public void testHttpJson_setIamPolicy_missingPolicy() {
+    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
+    assertThrows(
+        InvalidArgumentException.class,
+        () ->
+            httpjsonClient.setIamPolicy(
+                SetIamPolicyRequest.newBuilder().setResource(resource).build()));
+  }
+
+  @Test
+  public void testGrpc_testIamPermissions_doesNotExist() {
+    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
+    assertThrows(
+        NotFoundException.class,
+        () ->
+            grpcClient.testIamPermissions(
+                TestIamPermissionsRequest.newBuilder().setResource(resource).build()));
+  }
+
+  @Test
+  public void testHttpJson_testIamPermissions_doesNotExist() {
+    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
+    assertThrows(
+        NotFoundException.class,
+        () ->
+            httpjsonClient.testIamPermissions(
+                TestIamPermissionsRequest.newBuilder().setResource(resource).build()));
+  }
+
+  @Test
+  public void testGrpc_testIamPermissions_missingResource() {
+    assertThrows(
+        InvalidArgumentException.class,
+        () -> grpcClient.testIamPermissions(TestIamPermissionsRequest.newBuilder().build()));
+  }
+
+  @Test
+  public void testHttpJson_testIamPermissions_missingResource() {
+    assertThrows(
+        InvalidArgumentException.class,
+        () -> httpjsonClient.testIamPermissions(TestIamPermissionsRequest.newBuilder().build()));
   }
 }

From 2fda5da4f846c00fb6ee8e3b96f0ac69f1cca323 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Tue, 20 Jun 2023 15:07:51 -0400
Subject: [PATCH 04/26] chore: Add samples

---
 .../getiampolicy/AsyncGetIamPolicy.java       |  53 ++++++++
 .../getiampolicy/SyncGetIamPolicy.java        |  50 +++++++
 .../setiampolicy/AsyncSetIamPolicy.java       |  54 ++++++++
 .../setiampolicy/SyncSetIamPolicy.java        |  51 +++++++
 .../AsyncTestIamPermissions.java              |  54 ++++++++
 .../SyncTestIamPermissions.java               |  50 +++++++
 .../echo/getiampolicy/AsyncGetIamPolicy.java  |  53 ++++++++
 .../echo/getiampolicy/SyncGetIamPolicy.java   |  50 +++++++
 .../echo/setiampolicy/AsyncSetIamPolicy.java  |  54 ++++++++
 .../echo/setiampolicy/SyncSetIamPolicy.java   |  51 +++++++
 .../AsyncTestIamPermissions.java              |  54 ++++++++
 .../SyncTestIamPermissions.java               |  50 +++++++
 .../getiampolicy/AsyncGetIamPolicy.java       |  53 ++++++++
 .../getiampolicy/SyncGetIamPolicy.java        |  50 +++++++
 .../setiampolicy/AsyncSetIamPolicy.java       |  54 ++++++++
 .../setiampolicy/SyncSetIamPolicy.java        |  51 +++++++
 .../AsyncTestIamPermissions.java              |  54 ++++++++
 .../SyncTestIamPermissions.java               |  50 +++++++
 .../getiampolicy/AsyncGetIamPolicy.java       |  53 ++++++++
 .../getiampolicy/SyncGetIamPolicy.java        |  50 +++++++
 .../setiampolicy/AsyncSetIamPolicy.java       |  54 ++++++++
 .../setiampolicy/SyncSetIamPolicy.java        |  51 +++++++
 .../AsyncTestIamPermissions.java              |  54 ++++++++
 .../SyncTestIamPermissions.java               |  50 +++++++
 .../getiampolicy/AsyncGetIamPolicy.java       |  53 ++++++++
 .../getiampolicy/SyncGetIamPolicy.java        |  50 +++++++
 .../setiampolicy/AsyncSetIamPolicy.java       |  54 ++++++++
 .../setiampolicy/SyncSetIamPolicy.java        |  51 +++++++
 .../AsyncTestIamPermissions.java              |  54 ++++++++
 .../SyncTestIamPermissions.java               |  50 +++++++
 .../getiampolicy/AsyncGetIamPolicy.java       |  53 ++++++++
 .../getiampolicy/SyncGetIamPolicy.java        |  50 +++++++
 .../setiampolicy/AsyncSetIamPolicy.java       |  54 ++++++++
 .../setiampolicy/SyncSetIamPolicy.java        |  51 +++++++
 .../AsyncTestIamPermissions.java              |  54 ++++++++
 .../SyncTestIamPermissions.java               |  50 +++++++
 .../showcase/v1beta1/MockIAMPolicy.java       |  59 ++++++++
 .../showcase/v1beta1/MockIAMPolicyImpl.java   | 127 ++++++++++++++++++
 38 files changed, 2058 insertions(+)
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/getiampolicy/AsyncGetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/getiampolicy/SyncGetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/setiampolicy/AsyncSetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/setiampolicy/SyncSetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/testiampermissions/AsyncTestIamPermissions.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/testiampermissions/SyncTestIamPermissions.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/getiampolicy/AsyncGetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/getiampolicy/SyncGetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/setiampolicy/AsyncSetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/setiampolicy/SyncSetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/testiampermissions/AsyncTestIamPermissions.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/testiampermissions/SyncTestIamPermissions.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/getiampolicy/AsyncGetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/getiampolicy/SyncGetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/setiampolicy/AsyncSetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/setiampolicy/SyncSetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/testiampermissions/AsyncTestIamPermissions.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/testiampermissions/SyncTestIamPermissions.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/getiampolicy/AsyncGetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/getiampolicy/SyncGetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/setiampolicy/AsyncSetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/setiampolicy/SyncSetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/testiampermissions/AsyncTestIamPermissions.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/testiampermissions/SyncTestIamPermissions.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/getiampolicy/AsyncGetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/getiampolicy/SyncGetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/setiampolicy/AsyncSetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/setiampolicy/SyncSetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/testiampermissions/AsyncTestIamPermissions.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/testiampermissions/SyncTestIamPermissions.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/getiampolicy/AsyncGetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/getiampolicy/SyncGetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/setiampolicy/AsyncSetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/setiampolicy/SyncSetIamPolicy.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/testiampermissions/AsyncTestIamPermissions.java
 create mode 100644 showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/testiampermissions/SyncTestIamPermissions.java
 create mode 100644 showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/MockIAMPolicy.java
 create mode 100644 showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/MockIAMPolicyImpl.java

diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/getiampolicy/AsyncGetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/getiampolicy/AsyncGetIamPolicy.java
new file mode 100644
index 0000000000..d2d4492e96
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/getiampolicy/AsyncGetIamPolicy.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Compliance_GetIamPolicy_async]
+import com.google.api.core.ApiFuture;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.ComplianceClient;
+
+public class AsyncGetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    asyncGetIamPolicy();
+  }
+
+  public static void asyncGetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (ComplianceClient complianceClient = ComplianceClient.create()) {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      ApiFuture<Policy> future = complianceClient.getIamPolicyCallable().futureCall(request);
+      // Do something.
+      Policy response = future.get();
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Compliance_GetIamPolicy_async]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/getiampolicy/SyncGetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/getiampolicy/SyncGetIamPolicy.java
new file mode 100644
index 0000000000..73c78e0b63
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/getiampolicy/SyncGetIamPolicy.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Compliance_GetIamPolicy_sync]
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.ComplianceClient;
+
+public class SyncGetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    syncGetIamPolicy();
+  }
+
+  public static void syncGetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (ComplianceClient complianceClient = ComplianceClient.create()) {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      Policy response = complianceClient.getIamPolicy(request);
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Compliance_GetIamPolicy_sync]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/setiampolicy/AsyncSetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/setiampolicy/AsyncSetIamPolicy.java
new file mode 100644
index 0000000000..dc689ee76b
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/setiampolicy/AsyncSetIamPolicy.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Compliance_SetIamPolicy_async]
+import com.google.api.core.ApiFuture;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.protobuf.FieldMask;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.ComplianceClient;
+
+public class AsyncSetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    asyncSetIamPolicy();
+  }
+
+  public static void asyncSetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (ComplianceClient complianceClient = ComplianceClient.create()) {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      ApiFuture<Policy> future = complianceClient.setIamPolicyCallable().futureCall(request);
+      // Do something.
+      Policy response = future.get();
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Compliance_SetIamPolicy_async]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/setiampolicy/SyncSetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/setiampolicy/SyncSetIamPolicy.java
new file mode 100644
index 0000000000..661a8b156a
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/setiampolicy/SyncSetIamPolicy.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Compliance_SetIamPolicy_sync]
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.protobuf.FieldMask;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.ComplianceClient;
+
+public class SyncSetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    syncSetIamPolicy();
+  }
+
+  public static void syncSetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (ComplianceClient complianceClient = ComplianceClient.create()) {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      Policy response = complianceClient.setIamPolicy(request);
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Compliance_SetIamPolicy_sync]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/testiampermissions/AsyncTestIamPermissions.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/testiampermissions/AsyncTestIamPermissions.java
new file mode 100644
index 0000000000..8c1d3a74fd
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/testiampermissions/AsyncTestIamPermissions.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Compliance_TestIamPermissions_async]
+import com.google.api.core.ApiFuture;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.ComplianceClient;
+import java.util.ArrayList;
+
+public class AsyncTestIamPermissions {
+
+  public static void main(String[] args) throws Exception {
+    asyncTestIamPermissions();
+  }
+
+  public static void asyncTestIamPermissions() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (ComplianceClient complianceClient = ComplianceClient.create()) {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      ApiFuture<TestIamPermissionsResponse> future =
+          complianceClient.testIamPermissionsCallable().futureCall(request);
+      // Do something.
+      TestIamPermissionsResponse response = future.get();
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Compliance_TestIamPermissions_async]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/testiampermissions/SyncTestIamPermissions.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/testiampermissions/SyncTestIamPermissions.java
new file mode 100644
index 0000000000..ade92a9a66
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/compliance/testiampermissions/SyncTestIamPermissions.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Compliance_TestIamPermissions_sync]
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.ComplianceClient;
+import java.util.ArrayList;
+
+public class SyncTestIamPermissions {
+
+  public static void main(String[] args) throws Exception {
+    syncTestIamPermissions();
+  }
+
+  public static void syncTestIamPermissions() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (ComplianceClient complianceClient = ComplianceClient.create()) {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      TestIamPermissionsResponse response = complianceClient.testIamPermissions(request);
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Compliance_TestIamPermissions_sync]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/getiampolicy/AsyncGetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/getiampolicy/AsyncGetIamPolicy.java
new file mode 100644
index 0000000000..e24d3628b2
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/getiampolicy/AsyncGetIamPolicy.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Echo_GetIamPolicy_async]
+import com.google.api.core.ApiFuture;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.EchoClient;
+
+public class AsyncGetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    asyncGetIamPolicy();
+  }
+
+  public static void asyncGetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (EchoClient echoClient = EchoClient.create()) {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      ApiFuture<Policy> future = echoClient.getIamPolicyCallable().futureCall(request);
+      // Do something.
+      Policy response = future.get();
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Echo_GetIamPolicy_async]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/getiampolicy/SyncGetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/getiampolicy/SyncGetIamPolicy.java
new file mode 100644
index 0000000000..996048c045
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/getiampolicy/SyncGetIamPolicy.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Echo_GetIamPolicy_sync]
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.EchoClient;
+
+public class SyncGetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    syncGetIamPolicy();
+  }
+
+  public static void syncGetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (EchoClient echoClient = EchoClient.create()) {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      Policy response = echoClient.getIamPolicy(request);
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Echo_GetIamPolicy_sync]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/setiampolicy/AsyncSetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/setiampolicy/AsyncSetIamPolicy.java
new file mode 100644
index 0000000000..be2a431699
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/setiampolicy/AsyncSetIamPolicy.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Echo_SetIamPolicy_async]
+import com.google.api.core.ApiFuture;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.protobuf.FieldMask;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.EchoClient;
+
+public class AsyncSetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    asyncSetIamPolicy();
+  }
+
+  public static void asyncSetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (EchoClient echoClient = EchoClient.create()) {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      ApiFuture<Policy> future = echoClient.setIamPolicyCallable().futureCall(request);
+      // Do something.
+      Policy response = future.get();
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Echo_SetIamPolicy_async]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/setiampolicy/SyncSetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/setiampolicy/SyncSetIamPolicy.java
new file mode 100644
index 0000000000..df4aad5c6f
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/setiampolicy/SyncSetIamPolicy.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Echo_SetIamPolicy_sync]
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.protobuf.FieldMask;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.EchoClient;
+
+public class SyncSetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    syncSetIamPolicy();
+  }
+
+  public static void syncSetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (EchoClient echoClient = EchoClient.create()) {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      Policy response = echoClient.setIamPolicy(request);
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Echo_SetIamPolicy_sync]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/testiampermissions/AsyncTestIamPermissions.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/testiampermissions/AsyncTestIamPermissions.java
new file mode 100644
index 0000000000..b1629ef44b
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/testiampermissions/AsyncTestIamPermissions.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Echo_TestIamPermissions_async]
+import com.google.api.core.ApiFuture;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.EchoClient;
+import java.util.ArrayList;
+
+public class AsyncTestIamPermissions {
+
+  public static void main(String[] args) throws Exception {
+    asyncTestIamPermissions();
+  }
+
+  public static void asyncTestIamPermissions() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (EchoClient echoClient = EchoClient.create()) {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      ApiFuture<TestIamPermissionsResponse> future =
+          echoClient.testIamPermissionsCallable().futureCall(request);
+      // Do something.
+      TestIamPermissionsResponse response = future.get();
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Echo_TestIamPermissions_async]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/testiampermissions/SyncTestIamPermissions.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/testiampermissions/SyncTestIamPermissions.java
new file mode 100644
index 0000000000..3cf53789f5
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/echo/testiampermissions/SyncTestIamPermissions.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Echo_TestIamPermissions_sync]
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.EchoClient;
+import java.util.ArrayList;
+
+public class SyncTestIamPermissions {
+
+  public static void main(String[] args) throws Exception {
+    syncTestIamPermissions();
+  }
+
+  public static void syncTestIamPermissions() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (EchoClient echoClient = EchoClient.create()) {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      TestIamPermissionsResponse response = echoClient.testIamPermissions(request);
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Echo_TestIamPermissions_sync]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/getiampolicy/AsyncGetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/getiampolicy/AsyncGetIamPolicy.java
new file mode 100644
index 0000000000..c65a519e58
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/getiampolicy/AsyncGetIamPolicy.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Identity_GetIamPolicy_async]
+import com.google.api.core.ApiFuture;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.IdentityClient;
+
+public class AsyncGetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    asyncGetIamPolicy();
+  }
+
+  public static void asyncGetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (IdentityClient identityClient = IdentityClient.create()) {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      ApiFuture<Policy> future = identityClient.getIamPolicyCallable().futureCall(request);
+      // Do something.
+      Policy response = future.get();
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Identity_GetIamPolicy_async]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/getiampolicy/SyncGetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/getiampolicy/SyncGetIamPolicy.java
new file mode 100644
index 0000000000..9c9d03dc19
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/getiampolicy/SyncGetIamPolicy.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Identity_GetIamPolicy_sync]
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.IdentityClient;
+
+public class SyncGetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    syncGetIamPolicy();
+  }
+
+  public static void syncGetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (IdentityClient identityClient = IdentityClient.create()) {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      Policy response = identityClient.getIamPolicy(request);
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Identity_GetIamPolicy_sync]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/setiampolicy/AsyncSetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/setiampolicy/AsyncSetIamPolicy.java
new file mode 100644
index 0000000000..fd82d0947e
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/setiampolicy/AsyncSetIamPolicy.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Identity_SetIamPolicy_async]
+import com.google.api.core.ApiFuture;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.protobuf.FieldMask;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.IdentityClient;
+
+public class AsyncSetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    asyncSetIamPolicy();
+  }
+
+  public static void asyncSetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (IdentityClient identityClient = IdentityClient.create()) {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      ApiFuture<Policy> future = identityClient.setIamPolicyCallable().futureCall(request);
+      // Do something.
+      Policy response = future.get();
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Identity_SetIamPolicy_async]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/setiampolicy/SyncSetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/setiampolicy/SyncSetIamPolicy.java
new file mode 100644
index 0000000000..40d8c49efb
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/setiampolicy/SyncSetIamPolicy.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Identity_SetIamPolicy_sync]
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.protobuf.FieldMask;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.IdentityClient;
+
+public class SyncSetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    syncSetIamPolicy();
+  }
+
+  public static void syncSetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (IdentityClient identityClient = IdentityClient.create()) {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      Policy response = identityClient.setIamPolicy(request);
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Identity_SetIamPolicy_sync]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/testiampermissions/AsyncTestIamPermissions.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/testiampermissions/AsyncTestIamPermissions.java
new file mode 100644
index 0000000000..eabbf0662f
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/testiampermissions/AsyncTestIamPermissions.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Identity_TestIamPermissions_async]
+import com.google.api.core.ApiFuture;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.IdentityClient;
+import java.util.ArrayList;
+
+public class AsyncTestIamPermissions {
+
+  public static void main(String[] args) throws Exception {
+    asyncTestIamPermissions();
+  }
+
+  public static void asyncTestIamPermissions() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (IdentityClient identityClient = IdentityClient.create()) {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      ApiFuture<TestIamPermissionsResponse> future =
+          identityClient.testIamPermissionsCallable().futureCall(request);
+      // Do something.
+      TestIamPermissionsResponse response = future.get();
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Identity_TestIamPermissions_async]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/testiampermissions/SyncTestIamPermissions.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/testiampermissions/SyncTestIamPermissions.java
new file mode 100644
index 0000000000..a2c40f6212
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/identity/testiampermissions/SyncTestIamPermissions.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Identity_TestIamPermissions_sync]
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.IdentityClient;
+import java.util.ArrayList;
+
+public class SyncTestIamPermissions {
+
+  public static void main(String[] args) throws Exception {
+    syncTestIamPermissions();
+  }
+
+  public static void syncTestIamPermissions() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (IdentityClient identityClient = IdentityClient.create()) {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      TestIamPermissionsResponse response = identityClient.testIamPermissions(request);
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Identity_TestIamPermissions_sync]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/getiampolicy/AsyncGetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/getiampolicy/AsyncGetIamPolicy.java
new file mode 100644
index 0000000000..cbd62add0e
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/getiampolicy/AsyncGetIamPolicy.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Messaging_GetIamPolicy_async]
+import com.google.api.core.ApiFuture;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.MessagingClient;
+
+public class AsyncGetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    asyncGetIamPolicy();
+  }
+
+  public static void asyncGetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (MessagingClient messagingClient = MessagingClient.create()) {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      ApiFuture<Policy> future = messagingClient.getIamPolicyCallable().futureCall(request);
+      // Do something.
+      Policy response = future.get();
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Messaging_GetIamPolicy_async]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/getiampolicy/SyncGetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/getiampolicy/SyncGetIamPolicy.java
new file mode 100644
index 0000000000..fb328a20d5
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/getiampolicy/SyncGetIamPolicy.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Messaging_GetIamPolicy_sync]
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.MessagingClient;
+
+public class SyncGetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    syncGetIamPolicy();
+  }
+
+  public static void syncGetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (MessagingClient messagingClient = MessagingClient.create()) {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      Policy response = messagingClient.getIamPolicy(request);
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Messaging_GetIamPolicy_sync]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/setiampolicy/AsyncSetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/setiampolicy/AsyncSetIamPolicy.java
new file mode 100644
index 0000000000..496278c02e
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/setiampolicy/AsyncSetIamPolicy.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Messaging_SetIamPolicy_async]
+import com.google.api.core.ApiFuture;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.protobuf.FieldMask;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.MessagingClient;
+
+public class AsyncSetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    asyncSetIamPolicy();
+  }
+
+  public static void asyncSetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (MessagingClient messagingClient = MessagingClient.create()) {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      ApiFuture<Policy> future = messagingClient.setIamPolicyCallable().futureCall(request);
+      // Do something.
+      Policy response = future.get();
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Messaging_SetIamPolicy_async]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/setiampolicy/SyncSetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/setiampolicy/SyncSetIamPolicy.java
new file mode 100644
index 0000000000..c0963808b9
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/setiampolicy/SyncSetIamPolicy.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Messaging_SetIamPolicy_sync]
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.protobuf.FieldMask;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.MessagingClient;
+
+public class SyncSetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    syncSetIamPolicy();
+  }
+
+  public static void syncSetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (MessagingClient messagingClient = MessagingClient.create()) {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      Policy response = messagingClient.setIamPolicy(request);
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Messaging_SetIamPolicy_sync]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/testiampermissions/AsyncTestIamPermissions.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/testiampermissions/AsyncTestIamPermissions.java
new file mode 100644
index 0000000000..8fd9c8cd50
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/testiampermissions/AsyncTestIamPermissions.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Messaging_TestIamPermissions_async]
+import com.google.api.core.ApiFuture;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.MessagingClient;
+import java.util.ArrayList;
+
+public class AsyncTestIamPermissions {
+
+  public static void main(String[] args) throws Exception {
+    asyncTestIamPermissions();
+  }
+
+  public static void asyncTestIamPermissions() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (MessagingClient messagingClient = MessagingClient.create()) {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      ApiFuture<TestIamPermissionsResponse> future =
+          messagingClient.testIamPermissionsCallable().futureCall(request);
+      // Do something.
+      TestIamPermissionsResponse response = future.get();
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Messaging_TestIamPermissions_async]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/testiampermissions/SyncTestIamPermissions.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/testiampermissions/SyncTestIamPermissions.java
new file mode 100644
index 0000000000..b14ad4644e
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/messaging/testiampermissions/SyncTestIamPermissions.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Messaging_TestIamPermissions_sync]
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.MessagingClient;
+import java.util.ArrayList;
+
+public class SyncTestIamPermissions {
+
+  public static void main(String[] args) throws Exception {
+    syncTestIamPermissions();
+  }
+
+  public static void syncTestIamPermissions() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (MessagingClient messagingClient = MessagingClient.create()) {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      TestIamPermissionsResponse response = messagingClient.testIamPermissions(request);
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Messaging_TestIamPermissions_sync]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/getiampolicy/AsyncGetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/getiampolicy/AsyncGetIamPolicy.java
new file mode 100644
index 0000000000..4d486a194f
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/getiampolicy/AsyncGetIamPolicy.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_SequenceService_GetIamPolicy_async]
+import com.google.api.core.ApiFuture;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.SequenceServiceClient;
+
+public class AsyncGetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    asyncGetIamPolicy();
+  }
+
+  public static void asyncGetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (SequenceServiceClient sequenceServiceClient = SequenceServiceClient.create()) {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      ApiFuture<Policy> future = sequenceServiceClient.getIamPolicyCallable().futureCall(request);
+      // Do something.
+      Policy response = future.get();
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_SequenceService_GetIamPolicy_async]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/getiampolicy/SyncGetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/getiampolicy/SyncGetIamPolicy.java
new file mode 100644
index 0000000000..3b8516dbdf
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/getiampolicy/SyncGetIamPolicy.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_SequenceService_GetIamPolicy_sync]
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.SequenceServiceClient;
+
+public class SyncGetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    syncGetIamPolicy();
+  }
+
+  public static void syncGetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (SequenceServiceClient sequenceServiceClient = SequenceServiceClient.create()) {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      Policy response = sequenceServiceClient.getIamPolicy(request);
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_SequenceService_GetIamPolicy_sync]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/setiampolicy/AsyncSetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/setiampolicy/AsyncSetIamPolicy.java
new file mode 100644
index 0000000000..bbc0817d26
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/setiampolicy/AsyncSetIamPolicy.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_SequenceService_SetIamPolicy_async]
+import com.google.api.core.ApiFuture;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.protobuf.FieldMask;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.SequenceServiceClient;
+
+public class AsyncSetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    asyncSetIamPolicy();
+  }
+
+  public static void asyncSetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (SequenceServiceClient sequenceServiceClient = SequenceServiceClient.create()) {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      ApiFuture<Policy> future = sequenceServiceClient.setIamPolicyCallable().futureCall(request);
+      // Do something.
+      Policy response = future.get();
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_SequenceService_SetIamPolicy_async]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/setiampolicy/SyncSetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/setiampolicy/SyncSetIamPolicy.java
new file mode 100644
index 0000000000..053eaabc2f
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/setiampolicy/SyncSetIamPolicy.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_SequenceService_SetIamPolicy_sync]
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.protobuf.FieldMask;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.SequenceServiceClient;
+
+public class SyncSetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    syncSetIamPolicy();
+  }
+
+  public static void syncSetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (SequenceServiceClient sequenceServiceClient = SequenceServiceClient.create()) {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      Policy response = sequenceServiceClient.setIamPolicy(request);
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_SequenceService_SetIamPolicy_sync]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/testiampermissions/AsyncTestIamPermissions.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/testiampermissions/AsyncTestIamPermissions.java
new file mode 100644
index 0000000000..a9ebd6d513
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/testiampermissions/AsyncTestIamPermissions.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_SequenceService_TestIamPermissions_async]
+import com.google.api.core.ApiFuture;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.SequenceServiceClient;
+import java.util.ArrayList;
+
+public class AsyncTestIamPermissions {
+
+  public static void main(String[] args) throws Exception {
+    asyncTestIamPermissions();
+  }
+
+  public static void asyncTestIamPermissions() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (SequenceServiceClient sequenceServiceClient = SequenceServiceClient.create()) {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      ApiFuture<TestIamPermissionsResponse> future =
+          sequenceServiceClient.testIamPermissionsCallable().futureCall(request);
+      // Do something.
+      TestIamPermissionsResponse response = future.get();
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_SequenceService_TestIamPermissions_async]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/testiampermissions/SyncTestIamPermissions.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/testiampermissions/SyncTestIamPermissions.java
new file mode 100644
index 0000000000..06a1daf50d
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/sequenceservice/testiampermissions/SyncTestIamPermissions.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_SequenceService_TestIamPermissions_sync]
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.SequenceServiceClient;
+import java.util.ArrayList;
+
+public class SyncTestIamPermissions {
+
+  public static void main(String[] args) throws Exception {
+    syncTestIamPermissions();
+  }
+
+  public static void syncTestIamPermissions() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (SequenceServiceClient sequenceServiceClient = SequenceServiceClient.create()) {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      TestIamPermissionsResponse response = sequenceServiceClient.testIamPermissions(request);
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_SequenceService_TestIamPermissions_sync]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/getiampolicy/AsyncGetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/getiampolicy/AsyncGetIamPolicy.java
new file mode 100644
index 0000000000..4c341d5010
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/getiampolicy/AsyncGetIamPolicy.java
@@ -0,0 +1,53 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Testing_GetIamPolicy_async]
+import com.google.api.core.ApiFuture;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.TestingClient;
+
+public class AsyncGetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    asyncGetIamPolicy();
+  }
+
+  public static void asyncGetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (TestingClient testingClient = TestingClient.create()) {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      ApiFuture<Policy> future = testingClient.getIamPolicyCallable().futureCall(request);
+      // Do something.
+      Policy response = future.get();
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Testing_GetIamPolicy_async]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/getiampolicy/SyncGetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/getiampolicy/SyncGetIamPolicy.java
new file mode 100644
index 0000000000..438d22ccc5
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/getiampolicy/SyncGetIamPolicy.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Testing_GetIamPolicy_sync]
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.GetPolicyOptions;
+import com.google.iam.v1.Policy;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.TestingClient;
+
+public class SyncGetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    syncGetIamPolicy();
+  }
+
+  public static void syncGetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (TestingClient testingClient = TestingClient.create()) {
+      GetIamPolicyRequest request =
+          GetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setOptions(GetPolicyOptions.newBuilder().build())
+              .build();
+      Policy response = testingClient.getIamPolicy(request);
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Testing_GetIamPolicy_sync]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/setiampolicy/AsyncSetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/setiampolicy/AsyncSetIamPolicy.java
new file mode 100644
index 0000000000..85f76c4c7e
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/setiampolicy/AsyncSetIamPolicy.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Testing_SetIamPolicy_async]
+import com.google.api.core.ApiFuture;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.protobuf.FieldMask;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.TestingClient;
+
+public class AsyncSetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    asyncSetIamPolicy();
+  }
+
+  public static void asyncSetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (TestingClient testingClient = TestingClient.create()) {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      ApiFuture<Policy> future = testingClient.setIamPolicyCallable().futureCall(request);
+      // Do something.
+      Policy response = future.get();
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Testing_SetIamPolicy_async]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/setiampolicy/SyncSetIamPolicy.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/setiampolicy/SyncSetIamPolicy.java
new file mode 100644
index 0000000000..83aebdb52c
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/setiampolicy/SyncSetIamPolicy.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Testing_SetIamPolicy_sync]
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.protobuf.FieldMask;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.TestingClient;
+
+public class SyncSetIamPolicy {
+
+  public static void main(String[] args) throws Exception {
+    syncSetIamPolicy();
+  }
+
+  public static void syncSetIamPolicy() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (TestingClient testingClient = TestingClient.create()) {
+      SetIamPolicyRequest request =
+          SetIamPolicyRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .setPolicy(Policy.newBuilder().build())
+              .setUpdateMask(FieldMask.newBuilder().build())
+              .build();
+      Policy response = testingClient.setIamPolicy(request);
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Testing_SetIamPolicy_sync]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/testiampermissions/AsyncTestIamPermissions.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/testiampermissions/AsyncTestIamPermissions.java
new file mode 100644
index 0000000000..0f52261540
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/testiampermissions/AsyncTestIamPermissions.java
@@ -0,0 +1,54 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Testing_TestIamPermissions_async]
+import com.google.api.core.ApiFuture;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.TestingClient;
+import java.util.ArrayList;
+
+public class AsyncTestIamPermissions {
+
+  public static void main(String[] args) throws Exception {
+    asyncTestIamPermissions();
+  }
+
+  public static void asyncTestIamPermissions() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (TestingClient testingClient = TestingClient.create()) {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      ApiFuture<TestIamPermissionsResponse> future =
+          testingClient.testIamPermissionsCallable().futureCall(request);
+      // Do something.
+      TestIamPermissionsResponse response = future.get();
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Testing_TestIamPermissions_async]
diff --git a/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/testiampermissions/SyncTestIamPermissions.java b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/testiampermissions/SyncTestIamPermissions.java
new file mode 100644
index 0000000000..6d3ca7fc09
--- /dev/null
+++ b/showcase/gapic-showcase/samples/snippets/generated/src/main/java/com/google/showcase/v1beta1/testing/testiampermissions/SyncTestIamPermissions.java
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1.samples;
+
+// [START localhost7469_v1beta1_generated_Testing_TestIamPermissions_sync]
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
+import com.google.showcase.v1beta1.BlurbName;
+import com.google.showcase.v1beta1.TestingClient;
+import java.util.ArrayList;
+
+public class SyncTestIamPermissions {
+
+  public static void main(String[] args) throws Exception {
+    syncTestIamPermissions();
+  }
+
+  public static void syncTestIamPermissions() throws Exception {
+    // This snippet has been automatically generated and should be regarded as a code template only.
+    // It will require modifications to work:
+    // - It may require correct/in-range values for request initialization.
+    // - It may require specifying regional endpoints when creating the service client as shown in
+    // https://cloud.google.com/java/docs/setup#configure_endpoints_for_the_client_library
+    try (TestingClient testingClient = TestingClient.create()) {
+      TestIamPermissionsRequest request =
+          TestIamPermissionsRequest.newBuilder()
+              .setResource(
+                  BlurbName.ofUserLegacyUserBlurbName("[USER]", "[LEGACY_USER]", "[BLURB]")
+                      .toString())
+              .addAllPermissions(new ArrayList<String>())
+              .build();
+      TestIamPermissionsResponse response = testingClient.testIamPermissions(request);
+    }
+  }
+}
+// [END localhost7469_v1beta1_generated_Testing_TestIamPermissions_sync]
diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/MockIAMPolicy.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/MockIAMPolicy.java
new file mode 100644
index 0000000000..182872091c
--- /dev/null
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/MockIAMPolicy.java
@@ -0,0 +1,59 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1;
+
+import com.google.api.core.BetaApi;
+import com.google.api.gax.grpc.testing.MockGrpcService;
+import com.google.protobuf.AbstractMessage;
+import io.grpc.ServerServiceDefinition;
+import java.util.List;
+import javax.annotation.Generated;
+
+@BetaApi
+@Generated("by gapic-generator-java")
+public class MockIAMPolicy implements MockGrpcService {
+  private final MockIAMPolicyImpl serviceImpl;
+
+  public MockIAMPolicy() {
+    serviceImpl = new MockIAMPolicyImpl();
+  }
+
+  @Override
+  public List<AbstractMessage> getRequests() {
+    return serviceImpl.getRequests();
+  }
+
+  @Override
+  public void addResponse(AbstractMessage response) {
+    serviceImpl.addResponse(response);
+  }
+
+  @Override
+  public void addException(Exception exception) {
+    serviceImpl.addException(exception);
+  }
+
+  @Override
+  public ServerServiceDefinition getServiceDefinition() {
+    return serviceImpl.bindService();
+  }
+
+  @Override
+  public void reset() {
+    serviceImpl.reset();
+  }
+}
diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/MockIAMPolicyImpl.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/MockIAMPolicyImpl.java
new file mode 100644
index 0000000000..40abf1c36a
--- /dev/null
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/MockIAMPolicyImpl.java
@@ -0,0 +1,127 @@
+/*
+ * Copyright 2023 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.showcase.v1beta1;
+
+import com.google.api.core.BetaApi;
+import com.google.iam.v1.GetIamPolicyRequest;
+import com.google.iam.v1.IAMPolicyGrpc.IAMPolicyImplBase;
+import com.google.iam.v1.Policy;
+import com.google.iam.v1.SetIamPolicyRequest;
+import com.google.iam.v1.TestIamPermissionsRequest;
+import com.google.iam.v1.TestIamPermissionsResponse;
+import com.google.protobuf.AbstractMessage;
+import io.grpc.stub.StreamObserver;
+import java.util.ArrayList;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Queue;
+import javax.annotation.Generated;
+
+@BetaApi
+@Generated("by gapic-generator-java")
+public class MockIAMPolicyImpl extends IAMPolicyImplBase {
+  private List<AbstractMessage> requests;
+  private Queue<Object> responses;
+
+  public MockIAMPolicyImpl() {
+    requests = new ArrayList<>();
+    responses = new LinkedList<>();
+  }
+
+  public List<AbstractMessage> getRequests() {
+    return requests;
+  }
+
+  public void addResponse(AbstractMessage response) {
+    responses.add(response);
+  }
+
+  public void setResponses(List<AbstractMessage> responses) {
+    this.responses = new LinkedList<Object>(responses);
+  }
+
+  public void addException(Exception exception) {
+    responses.add(exception);
+  }
+
+  public void reset() {
+    requests = new ArrayList<>();
+    responses = new LinkedList<>();
+  }
+
+  @Override
+  public void testIamPermissions(
+      TestIamPermissionsRequest request,
+      StreamObserver<TestIamPermissionsResponse> responseObserver) {
+    Object response = responses.poll();
+    if (response instanceof TestIamPermissionsResponse) {
+      requests.add(request);
+      responseObserver.onNext(((TestIamPermissionsResponse) response));
+      responseObserver.onCompleted();
+    } else if (response instanceof Exception) {
+      responseObserver.onError(((Exception) response));
+    } else {
+      responseObserver.onError(
+          new IllegalArgumentException(
+              String.format(
+                  "Unrecognized response type %s for method TestIamPermissions, expected %s or %s",
+                  response == null ? "null" : response.getClass().getName(),
+                  TestIamPermissionsResponse.class.getName(),
+                  Exception.class.getName())));
+    }
+  }
+
+  @Override
+  public void setIamPolicy(SetIamPolicyRequest request, StreamObserver<Policy> responseObserver) {
+    Object response = responses.poll();
+    if (response instanceof Policy) {
+      requests.add(request);
+      responseObserver.onNext(((Policy) response));
+      responseObserver.onCompleted();
+    } else if (response instanceof Exception) {
+      responseObserver.onError(((Exception) response));
+    } else {
+      responseObserver.onError(
+          new IllegalArgumentException(
+              String.format(
+                  "Unrecognized response type %s for method SetIamPolicy, expected %s or %s",
+                  response == null ? "null" : response.getClass().getName(),
+                  Policy.class.getName(),
+                  Exception.class.getName())));
+    }
+  }
+
+  @Override
+  public void getIamPolicy(GetIamPolicyRequest request, StreamObserver<Policy> responseObserver) {
+    Object response = responses.poll();
+    if (response instanceof Policy) {
+      requests.add(request);
+      responseObserver.onNext(((Policy) response));
+      responseObserver.onCompleted();
+    } else if (response instanceof Exception) {
+      responseObserver.onError(((Exception) response));
+    } else {
+      responseObserver.onError(
+          new IllegalArgumentException(
+              String.format(
+                  "Unrecognized response type %s for method GetIamPolicy, expected %s or %s",
+                  response == null ? "null" : response.getClass().getName(),
+                  Policy.class.getName(),
+                  Exception.class.getName())));
+    }
+  }
+}

From 6c2f4ba6e075829a1d13f182738f42c1b58ae64e Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Tue, 20 Jun 2023 16:30:01 -0400
Subject: [PATCH 05/26] chore: Exclude httpjson tests

---
 showcase/pom.xml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/showcase/pom.xml b/showcase/pom.xml
index 6842b5b95f..5a0bb236c5 100644
--- a/showcase/pom.xml
+++ b/showcase/pom.xml
@@ -80,6 +80,11 @@
               <!-- TODO(1547): Remove this exclusion once MessagingClientHttpJsonTest#updateBlurbTest is fixed -->
               <excludes>
                 <exclude>**/MessagingClientHttpJsonTest.java</exclude>
+                <exclude>**/ComplianceClientHttpJsonTest.java</exclude>
+                <exclude>**/EchoClientHttpJsonTest.java</exclude>
+                <exclude>**/IdentityClientHttpJsonTest.java</exclude>
+                <exclude>**/SequenceServiceClientHttpJsonTest.java</exclude>
+                <exclude>**/TestingClientHttpJsonTest.java</exclude>
               </excludes>
               <reportNameSuffix>sponge_log</reportNameSuffix>
               <skipTests>${skipUnitTests}</skipTests>

From db735abb7623d9b2e687413503e075938e9a398a Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Tue, 20 Jun 2023 16:38:37 -0400
Subject: [PATCH 06/26] chore: Use @Before to create the resource

---
 .../com/google/showcase/v1beta1/it/ITIam.java | 99 +++++++++----------
 1 file changed, 47 insertions(+), 52 deletions(-)

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index 0ec484f770..3a66fb8711 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -33,12 +33,14 @@
 import java.util.UUID;
 import java.util.concurrent.TimeUnit;
 import org.junit.AfterClass;
+import org.junit.Before;
 import org.junit.BeforeClass;
 import org.junit.Test;
 
 public class ITIam {
   private static EchoClient grpcClient;
   private static EchoClient httpjsonClient;
+  private String resource;
 
   @BeforeClass
   public static void createClients() throws Exception {
@@ -46,6 +48,11 @@ public static void createClients() throws Exception {
     httpjsonClient = TestClientInitializer.createHttpJsonEchoClient();
   }
 
+  @Before
+  public void setupTests() {
+    resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
+  }
+
   @AfterClass
   public static void destroyClients() throws InterruptedException {
     grpcClient.close();
@@ -58,7 +65,6 @@ public static void destroyClients() throws InterruptedException {
 
   @Test
   public void testGrpc_setIamPolicy() {
-    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
     Policy expectedPolicy =
         Policy.newBuilder()
             .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
@@ -71,7 +77,6 @@ public void testGrpc_setIamPolicy() {
 
   @Test
   public void testHttpJson_setIamPolicy() {
-    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
     Policy expectedPolicy =
         Policy.newBuilder()
             .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
@@ -84,7 +89,6 @@ public void testHttpJson_setIamPolicy() {
 
   @Test
   public void testGrpc_getIamPolicy() {
-    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
     Policy expectedPolicy =
         Policy.newBuilder()
             .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
@@ -100,7 +104,6 @@ public void testGrpc_getIamPolicy() {
 
   @Test
   public void testHttpJson_getIamPolicy() {
-    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
     Policy expectedPolicy =
         Policy.newBuilder()
             .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
@@ -114,51 +117,8 @@ public void testHttpJson_getIamPolicy() {
     assertThat(policy).isEqualTo(expectedPolicy);
   }
 
-  @Test
-  public void testGrpc_testIamPermissions() {
-    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
-    Policy expectedPolicy =
-        Policy.newBuilder()
-            .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
-            .build();
-    SetIamPolicyRequest policyRequest =
-        SetIamPolicyRequest.newBuilder().setPolicy(expectedPolicy).setResource(resource).build();
-    grpcClient.setIamPolicy(policyRequest);
-    List<String> permissions = ImmutableList.of("foo.create");
-    TestIamPermissionsResponse testIamPermissionsResponse =
-        grpcClient.testIamPermissions(
-            TestIamPermissionsRequest.newBuilder()
-                .setResource(resource)
-                .addAllPermissions(permissions)
-                .build());
-    assertThat(testIamPermissionsResponse.getPermissionsList())
-        .containsExactlyElementsIn(permissions);
-  }
-
-  @Test
-  public void testHttpJson_testIamPermissions() {
-    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
-    Policy expectedPolicy =
-        Policy.newBuilder()
-            .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
-            .build();
-    SetIamPolicyRequest policyRequest =
-        SetIamPolicyRequest.newBuilder().setPolicy(expectedPolicy).setResource(resource).build();
-    httpjsonClient.setIamPolicy(policyRequest);
-    List<String> permissions = ImmutableList.of("foo.create");
-    TestIamPermissionsResponse testIamPermissionsResponse =
-        httpjsonClient.testIamPermissions(
-            TestIamPermissionsRequest.newBuilder()
-                .setResource(resource)
-                .addAllPermissions(permissions)
-                .build());
-    assertThat(testIamPermissionsResponse.getPermissionsList())
-        .containsExactlyElementsIn(permissions);
-  }
-
   @Test
   public void testGrpc_getIamPolicy_doesNotExist() {
-    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
     assertThrows(
         NotFoundException.class,
         () ->
@@ -168,7 +128,6 @@ public void testGrpc_getIamPolicy_doesNotExist() {
 
   @Test
   public void testHttpJson_getIamPolicy_doesNotExist() {
-    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
     assertThrows(
         NotFoundException.class,
         () ->
@@ -206,7 +165,6 @@ public void testHttpJson_setIamPolicy_missingResource() {
 
   @Test
   public void testGrpc_setIamPolicy_missingPolicy() {
-    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
     assertThrows(
         InvalidArgumentException.class,
         () ->
@@ -216,7 +174,6 @@ public void testGrpc_setIamPolicy_missingPolicy() {
 
   @Test
   public void testHttpJson_setIamPolicy_missingPolicy() {
-    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
     assertThrows(
         InvalidArgumentException.class,
         () ->
@@ -224,9 +181,48 @@ public void testHttpJson_setIamPolicy_missingPolicy() {
                 SetIamPolicyRequest.newBuilder().setResource(resource).build()));
   }
 
+  @Test
+  public void testGrpc_testIamPermissions() {
+    Policy expectedPolicy =
+        Policy.newBuilder()
+            .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
+            .build();
+    SetIamPolicyRequest policyRequest =
+        SetIamPolicyRequest.newBuilder().setPolicy(expectedPolicy).setResource(resource).build();
+    grpcClient.setIamPolicy(policyRequest);
+    List<String> permissions = ImmutableList.of("foo.create");
+    TestIamPermissionsResponse testIamPermissionsResponse =
+        grpcClient.testIamPermissions(
+            TestIamPermissionsRequest.newBuilder()
+                .setResource(resource)
+                .addAllPermissions(permissions)
+                .build());
+    assertThat(testIamPermissionsResponse.getPermissionsList())
+        .containsExactlyElementsIn(permissions);
+  }
+
+  @Test
+  public void testHttpJson_testIamPermissions() {
+    Policy expectedPolicy =
+        Policy.newBuilder()
+            .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
+            .build();
+    SetIamPolicyRequest policyRequest =
+        SetIamPolicyRequest.newBuilder().setPolicy(expectedPolicy).setResource(resource).build();
+    httpjsonClient.setIamPolicy(policyRequest);
+    List<String> permissions = ImmutableList.of("foo.create");
+    TestIamPermissionsResponse testIamPermissionsResponse =
+        httpjsonClient.testIamPermissions(
+            TestIamPermissionsRequest.newBuilder()
+                .setResource(resource)
+                .addAllPermissions(permissions)
+                .build());
+    assertThat(testIamPermissionsResponse.getPermissionsList())
+        .containsExactlyElementsIn(permissions);
+  }
+
   @Test
   public void testGrpc_testIamPermissions_doesNotExist() {
-    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
     assertThrows(
         NotFoundException.class,
         () ->
@@ -236,7 +232,6 @@ public void testGrpc_testIamPermissions_doesNotExist() {
 
   @Test
   public void testHttpJson_testIamPermissions_doesNotExist() {
-    String resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
     assertThrows(
         NotFoundException.class,
         () ->

From d51e35fdd25b9a67b9305362e7b953a7fbfad513 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Wed, 21 Jun 2023 13:40:32 -0400
Subject: [PATCH 07/26] chore: Use constant for policy

---
 .../com/google/showcase/v1beta1/it/ITIam.java | 48 ++++++-------------
 1 file changed, 14 insertions(+), 34 deletions(-)

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index 3a66fb8711..a3d65873c0 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -38,6 +38,10 @@
 import org.junit.Test;
 
 public class ITIam {
+  private static final Policy DEFAULT_POLICY =
+      Policy.newBuilder()
+          .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
+          .build();
   private static EchoClient grpcClient;
   private static EchoClient httpjsonClient;
   private String resource;
@@ -65,56 +69,40 @@ public static void destroyClients() throws InterruptedException {
 
   @Test
   public void testGrpc_setIamPolicy() {
-    Policy expectedPolicy =
-        Policy.newBuilder()
-            .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
-            .build();
     SetIamPolicyRequest policyRequest =
-        SetIamPolicyRequest.newBuilder().setPolicy(expectedPolicy).setResource(resource).build();
+        SetIamPolicyRequest.newBuilder().setPolicy(DEFAULT_POLICY).setResource(resource).build();
     Policy policy = grpcClient.setIamPolicy(policyRequest);
-    assertThat(policy).isEqualTo(expectedPolicy);
+    assertThat(policy).isEqualTo(DEFAULT_POLICY);
   }
 
   @Test
   public void testHttpJson_setIamPolicy() {
-    Policy expectedPolicy =
-        Policy.newBuilder()
-            .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
-            .build();
     SetIamPolicyRequest policyRequest =
-        SetIamPolicyRequest.newBuilder().setPolicy(expectedPolicy).setResource(resource).build();
+        SetIamPolicyRequest.newBuilder().setPolicy(DEFAULT_POLICY).setResource(resource).build();
     Policy policy = httpjsonClient.setIamPolicy(policyRequest);
-    assertThat(policy).isEqualTo(expectedPolicy);
+    assertThat(policy).isEqualTo(DEFAULT_POLICY);
   }
 
   @Test
   public void testGrpc_getIamPolicy() {
-    Policy expectedPolicy =
-        Policy.newBuilder()
-            .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
-            .build();
     SetIamPolicyRequest policyRequest =
-        SetIamPolicyRequest.newBuilder().setPolicy(expectedPolicy).setResource(resource).build();
+        SetIamPolicyRequest.newBuilder().setPolicy(DEFAULT_POLICY).setResource(resource).build();
     grpcClient.setIamPolicy(policyRequest);
 
     Policy policy =
         grpcClient.getIamPolicy(GetIamPolicyRequest.newBuilder().setResource(resource).build());
-    assertThat(policy).isEqualTo(expectedPolicy);
+    assertThat(policy).isEqualTo(DEFAULT_POLICY);
   }
 
   @Test
   public void testHttpJson_getIamPolicy() {
-    Policy expectedPolicy =
-        Policy.newBuilder()
-            .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
-            .build();
     SetIamPolicyRequest policyRequest =
-        SetIamPolicyRequest.newBuilder().setPolicy(expectedPolicy).setResource(resource).build();
+        SetIamPolicyRequest.newBuilder().setPolicy(DEFAULT_POLICY).setResource(resource).build();
     httpjsonClient.setIamPolicy(policyRequest);
 
     Policy policy =
         httpjsonClient.getIamPolicy(GetIamPolicyRequest.newBuilder().setResource(resource).build());
-    assertThat(policy).isEqualTo(expectedPolicy);
+    assertThat(policy).isEqualTo(DEFAULT_POLICY);
   }
 
   @Test
@@ -183,12 +171,8 @@ public void testHttpJson_setIamPolicy_missingPolicy() {
 
   @Test
   public void testGrpc_testIamPermissions() {
-    Policy expectedPolicy =
-        Policy.newBuilder()
-            .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
-            .build();
     SetIamPolicyRequest policyRequest =
-        SetIamPolicyRequest.newBuilder().setPolicy(expectedPolicy).setResource(resource).build();
+        SetIamPolicyRequest.newBuilder().setPolicy(DEFAULT_POLICY).setResource(resource).build();
     grpcClient.setIamPolicy(policyRequest);
     List<String> permissions = ImmutableList.of("foo.create");
     TestIamPermissionsResponse testIamPermissionsResponse =
@@ -203,12 +187,8 @@ public void testGrpc_testIamPermissions() {
 
   @Test
   public void testHttpJson_testIamPermissions() {
-    Policy expectedPolicy =
-        Policy.newBuilder()
-            .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
-            .build();
     SetIamPolicyRequest policyRequest =
-        SetIamPolicyRequest.newBuilder().setPolicy(expectedPolicy).setResource(resource).build();
+        SetIamPolicyRequest.newBuilder().setPolicy(DEFAULT_POLICY).setResource(resource).build();
     httpjsonClient.setIamPolicy(policyRequest);
     List<String> permissions = ImmutableList.of("foo.create");
     TestIamPermissionsResponse testIamPermissionsResponse =

From 6b4255a64e47baa879e885b243aee74ec5574a23 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Wed, 21 Jun 2023 14:05:38 -0400
Subject: [PATCH 08/26] chore: Log resource name

---
 .../com/google/showcase/v1beta1/it/ITIam.java | 65 ++++++++++---------
 1 file changed, 33 insertions(+), 32 deletions(-)

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index a3d65873c0..adefe89449 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -55,6 +55,7 @@ public static void createClients() throws Exception {
   @Before
   public void setupTests() {
     resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
+    System.out.println(resource);
   }
 
   @AfterClass
@@ -83,6 +84,38 @@ public void testHttpJson_setIamPolicy() {
     assertThat(policy).isEqualTo(DEFAULT_POLICY);
   }
 
+  @Test
+  public void testGrpc_setIamPolicy_missingResource() {
+    assertThrows(
+        InvalidArgumentException.class,
+        () -> grpcClient.setIamPolicy(SetIamPolicyRequest.newBuilder().build()));
+  }
+
+  @Test
+  public void testHttpJson_setIamPolicy_missingResource() {
+    assertThrows(
+        InvalidArgumentException.class,
+        () -> httpjsonClient.setIamPolicy(SetIamPolicyRequest.newBuilder().build()));
+  }
+
+  @Test
+  public void testGrpc_setIamPolicy_missingPolicy() {
+    assertThrows(
+        InvalidArgumentException.class,
+        () ->
+            grpcClient.setIamPolicy(
+                SetIamPolicyRequest.newBuilder().setResource(resource).build()));
+  }
+
+  @Test
+  public void testHttpJson_setIamPolicy_missingPolicy() {
+    assertThrows(
+        InvalidArgumentException.class,
+        () ->
+            httpjsonClient.setIamPolicy(
+                SetIamPolicyRequest.newBuilder().setResource(resource).build()));
+  }
+
   @Test
   public void testGrpc_getIamPolicy() {
     SetIamPolicyRequest policyRequest =
@@ -137,38 +170,6 @@ public void testHttpJson_getIamPolicy_missingResource() {
         () -> httpjsonClient.getIamPolicy(GetIamPolicyRequest.newBuilder().build()));
   }
 
-  @Test
-  public void testGrpc_setIamPolicy_missingResource() {
-    assertThrows(
-        InvalidArgumentException.class,
-        () -> grpcClient.setIamPolicy(SetIamPolicyRequest.newBuilder().build()));
-  }
-
-  @Test
-  public void testHttpJson_setIamPolicy_missingResource() {
-    assertThrows(
-        InvalidArgumentException.class,
-        () -> httpjsonClient.setIamPolicy(SetIamPolicyRequest.newBuilder().build()));
-  }
-
-  @Test
-  public void testGrpc_setIamPolicy_missingPolicy() {
-    assertThrows(
-        InvalidArgumentException.class,
-        () ->
-            grpcClient.setIamPolicy(
-                SetIamPolicyRequest.newBuilder().setResource(resource).build()));
-  }
-
-  @Test
-  public void testHttpJson_setIamPolicy_missingPolicy() {
-    assertThrows(
-        InvalidArgumentException.class,
-        () ->
-            httpjsonClient.setIamPolicy(
-                SetIamPolicyRequest.newBuilder().setResource(resource).build()));
-  }
-
   @Test
   public void testGrpc_testIamPermissions() {
     SetIamPolicyRequest policyRequest =

From 60470465229ea7d8896bf186acca14417cad5212 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Wed, 21 Jun 2023 14:24:56 -0400
Subject: [PATCH 09/26] chore: Test use setPolicyRequest's resourceName

---
 .../src/test/java/com/google/showcase/v1beta1/it/ITIam.java   | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index adefe89449..25369e0535 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -55,7 +55,6 @@ public static void createClients() throws Exception {
   @Before
   public void setupTests() {
     resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
-    System.out.println(resource);
   }
 
   @AfterClass
@@ -134,7 +133,8 @@ public void testHttpJson_getIamPolicy() {
     httpjsonClient.setIamPolicy(policyRequest);
 
     Policy policy =
-        httpjsonClient.getIamPolicy(GetIamPolicyRequest.newBuilder().setResource(resource).build());
+        httpjsonClient.getIamPolicy(
+            GetIamPolicyRequest.newBuilder().setResource(policyRequest.getResource()).build());
     assertThat(policy).isEqualTo(DEFAULT_POLICY);
   }
 

From 6272824201204841060ece22ca37e953c978e893 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Wed, 21 Jun 2023 14:54:01 -0400
Subject: [PATCH 10/26] chore: run mvn clean before showcase tests

---
 .github/workflows/ci.yaml | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index fccf60117f..c6711b4a73 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -178,7 +178,7 @@ jobs:
       - run: mvn -version
       - name: Install Maven modules
         run: |
-          mvn install -B -ntp -DskipTests -Dclirr.skip -Dcheckstyle.skip
+          mvn clean install -B -ntp -DskipTests -Dclirr.skip -Dcheckstyle.skip
       - name: Java Linter
         working-directory: showcase
         run: |
@@ -203,7 +203,7 @@ jobs:
       - name: Showcase integration tests
         working-directory: showcase
         run: |
-          mvn verify \
+          mvn clean verify \
             -P enable-integration-tests \
             --batch-mode \
             --no-transfer-progress

From 39d3fe38160d2806cbbba248dabebb907e1815d7 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Wed, 21 Jun 2023 15:04:55 -0400
Subject: [PATCH 11/26] chore: Attempt again with cache deleted

---
 .github/workflows/ci.yaml                                     | 4 ++--
 .../src/test/java/com/google/showcase/v1beta1/it/ITIam.java   | 3 +--
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index c6711b4a73..fccf60117f 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -178,7 +178,7 @@ jobs:
       - run: mvn -version
       - name: Install Maven modules
         run: |
-          mvn clean install -B -ntp -DskipTests -Dclirr.skip -Dcheckstyle.skip
+          mvn install -B -ntp -DskipTests -Dclirr.skip -Dcheckstyle.skip
       - name: Java Linter
         working-directory: showcase
         run: |
@@ -203,7 +203,7 @@ jobs:
       - name: Showcase integration tests
         working-directory: showcase
         run: |
-          mvn clean verify \
+          mvn verify \
             -P enable-integration-tests \
             --batch-mode \
             --no-transfer-progress
diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index 25369e0535..f07b5df21e 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -133,8 +133,7 @@ public void testHttpJson_getIamPolicy() {
     httpjsonClient.setIamPolicy(policyRequest);
 
     Policy policy =
-        httpjsonClient.getIamPolicy(
-            GetIamPolicyRequest.newBuilder().setResource(policyRequest.getResource()).build());
+        httpjsonClient.getIamPolicy(GetIamPolicyRequest.newBuilder().setResource(resource).build());
     assertThat(policy).isEqualTo(DEFAULT_POLICY);
   }
 

From c02c9efdf42cdf3a86b9f248f14d661d18fafb49 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Wed, 21 Jun 2023 15:26:24 -0400
Subject: [PATCH 12/26] chore: Add logging for test

---
 .../src/test/java/com/google/showcase/v1beta1/it/ITIam.java   | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index f07b5df21e..03f62dd2ca 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -130,11 +130,13 @@ public void testGrpc_getIamPolicy() {
   public void testHttpJson_getIamPolicy() {
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder().setPolicy(DEFAULT_POLICY).setResource(resource).build();
-    httpjsonClient.setIamPolicy(policyRequest);
+    Policy setIamPolicy = httpjsonClient.setIamPolicy(policyRequest);
+    System.out.println(setIamPolicy.getBindingsList() + " " + resource);
 
     Policy policy =
         httpjsonClient.getIamPolicy(GetIamPolicyRequest.newBuilder().setResource(resource).build());
     assertThat(policy).isEqualTo(DEFAULT_POLICY);
+    System.out.println(resource);
   }
 
   @Test

From a1655456b832420db0f5bb16962c5222c0588fb9 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Wed, 21 Jun 2023 15:56:56 -0400
Subject: [PATCH 13/26] chore: Sleep for 1s

---
 .../src/test/java/com/google/showcase/v1beta1/it/ITIam.java   | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index 03f62dd2ca..19c58b25c2 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -127,12 +127,14 @@ public void testGrpc_getIamPolicy() {
   }
 
   @Test
-  public void testHttpJson_getIamPolicy() {
+  public void testHttpJson_getIamPolicy() throws InterruptedException {
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder().setPolicy(DEFAULT_POLICY).setResource(resource).build();
     Policy setIamPolicy = httpjsonClient.setIamPolicy(policyRequest);
     System.out.println(setIamPolicy.getBindingsList() + " " + resource);
 
+    Thread.sleep(1000);
+
     Policy policy =
         httpjsonClient.getIamPolicy(GetIamPolicyRequest.newBuilder().setResource(resource).build());
     assertThat(policy).isEqualTo(DEFAULT_POLICY);

From c119191bc1f320eff6d58462030253166e8b75b4 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Wed, 21 Jun 2023 16:14:38 -0400
Subject: [PATCH 14/26] chore: Use resource from setPolicyRequest

---
 .../com/google/showcase/v1beta1/it/ITIam.java  | 18 ++++++++----------
 1 file changed, 8 insertions(+), 10 deletions(-)

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index 19c58b25c2..8c2f914884 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -122,23 +122,21 @@ public void testGrpc_getIamPolicy() {
     grpcClient.setIamPolicy(policyRequest);
 
     Policy policy =
-        grpcClient.getIamPolicy(GetIamPolicyRequest.newBuilder().setResource(resource).build());
+        grpcClient.getIamPolicy(
+            GetIamPolicyRequest.newBuilder().setResource(policyRequest.getResource()).build());
     assertThat(policy).isEqualTo(DEFAULT_POLICY);
   }
 
   @Test
-  public void testHttpJson_getIamPolicy() throws InterruptedException {
+  public void testHttpJson_getIamPolicy() {
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder().setPolicy(DEFAULT_POLICY).setResource(resource).build();
-    Policy setIamPolicy = httpjsonClient.setIamPolicy(policyRequest);
-    System.out.println(setIamPolicy.getBindingsList() + " " + resource);
-
-    Thread.sleep(1000);
+    httpjsonClient.setIamPolicy(policyRequest);
 
     Policy policy =
-        httpjsonClient.getIamPolicy(GetIamPolicyRequest.newBuilder().setResource(resource).build());
+        httpjsonClient.getIamPolicy(
+            GetIamPolicyRequest.newBuilder().setResource(policyRequest.getResource()).build());
     assertThat(policy).isEqualTo(DEFAULT_POLICY);
-    System.out.println(resource);
   }
 
   @Test
@@ -182,7 +180,7 @@ public void testGrpc_testIamPermissions() {
     TestIamPermissionsResponse testIamPermissionsResponse =
         grpcClient.testIamPermissions(
             TestIamPermissionsRequest.newBuilder()
-                .setResource(resource)
+                .setResource(policyRequest.getResource())
                 .addAllPermissions(permissions)
                 .build());
     assertThat(testIamPermissionsResponse.getPermissionsList())
@@ -198,7 +196,7 @@ public void testHttpJson_testIamPermissions() {
     TestIamPermissionsResponse testIamPermissionsResponse =
         httpjsonClient.testIamPermissions(
             TestIamPermissionsRequest.newBuilder()
-                .setResource(resource)
+                .setResource(policyRequest.getResource())
                 .addAllPermissions(permissions)
                 .build());
     assertThat(testIamPermissionsResponse.getPermissionsList())

From d1ce001cd66580067fa94b660ee0704dfbfdd787 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Wed, 21 Jun 2023 17:02:45 -0400
Subject: [PATCH 15/26] chore: Ignore failing HttpJson test for now

---
 .../src/test/java/com/google/showcase/v1beta1/it/ITIam.java     | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index 8c2f914884..c2285a2151 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -35,6 +35,7 @@
 import org.junit.AfterClass;
 import org.junit.Before;
 import org.junit.BeforeClass;
+import org.junit.Ignore;
 import org.junit.Test;
 
 public class ITIam {
@@ -127,6 +128,7 @@ public void testGrpc_getIamPolicy() {
     assertThat(policy).isEqualTo(DEFAULT_POLICY);
   }
 
+  @Ignore
   @Test
   public void testHttpJson_getIamPolicy() {
     SetIamPolicyRequest policyRequest =

From 42f19562551984e8446a359ec8f6c52c2929a558 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Wed, 21 Jun 2023 17:40:53 -0400
Subject: [PATCH 16/26] chore: Un-ignore test

---
 .../src/test/java/com/google/showcase/v1beta1/it/ITIam.java      | 1 -
 1 file changed, 1 deletion(-)

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index c2285a2151..86d61e1387 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -128,7 +128,6 @@ public void testGrpc_getIamPolicy() {
     assertThat(policy).isEqualTo(DEFAULT_POLICY);
   }
 
-  @Ignore
   @Test
   public void testHttpJson_getIamPolicy() {
     SetIamPolicyRequest policyRequest =

From 3a6c3b3e9a6a30c8c1f092e98722eeac78673b5b Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Wed, 21 Jun 2023 17:43:34 -0400
Subject: [PATCH 17/26] chore: Fix lint issues

---
 .../src/test/java/com/google/showcase/v1beta1/it/ITIam.java      | 1 -
 1 file changed, 1 deletion(-)

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index 86d61e1387..8c2f914884 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -35,7 +35,6 @@
 import org.junit.AfterClass;
 import org.junit.Before;
 import org.junit.BeforeClass;
-import org.junit.Ignore;
 import org.junit.Test;
 
 public class ITIam {

From d150fdb8c4975dd072fa9e01e61611b80b935469 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Wed, 21 Jun 2023 17:58:57 -0400
Subject: [PATCH 18/26] chore: Test with rooms/ prefix

---
 .../src/test/java/com/google/showcase/v1beta1/it/ITIam.java     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index 8c2f914884..428bdef4d9 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -54,7 +54,7 @@ public static void createClients() throws Exception {
 
   @Before
   public void setupTests() {
-    resource = "users/" + UUID.randomUUID().toString().substring(0, 8);
+    resource = "rooms/" + UUID.randomUUID().toString().substring(0, 8);
   }
 
   @AfterClass

From 6652d000e0756cd8edb7bd50839261e1772d5be0 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Wed, 21 Jun 2023 19:13:06 -0400
Subject: [PATCH 19/26] chore: Use Identity client for Users

---
 .../com/google/showcase/v1beta1/it/ITIam.java | 56 ++++++++++++-------
 1 file changed, 37 insertions(+), 19 deletions(-)

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index 428bdef4d9..0bd2be7348 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -27,7 +27,7 @@
 import com.google.iam.v1.SetIamPolicyRequest;
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
-import com.google.showcase.v1beta1.EchoClient;
+import com.google.showcase.v1beta1.IdentityClient;
 import com.google.showcase.v1beta1.it.util.TestClientInitializer;
 import java.util.List;
 import java.util.UUID;
@@ -42,19 +42,19 @@ public class ITIam {
       Policy.newBuilder()
           .addBindings(Binding.newBuilder().setRole("foo.editor").addMembers("allUsers"))
           .build();
-  private static EchoClient grpcClient;
-  private static EchoClient httpjsonClient;
-  private String resource;
+  private static IdentityClient grpcClient;
+  private static IdentityClient httpjsonClient;
+  private String resourceName;
 
   @BeforeClass
   public static void createClients() throws Exception {
-    grpcClient = TestClientInitializer.createGrpcEchoClient();
-    httpjsonClient = TestClientInitializer.createHttpJsonEchoClient();
+    grpcClient = TestClientInitializer.createGrpcIdentityClient();
+    httpjsonClient = TestClientInitializer.createHttpJsonIdentityClient();
   }
 
   @Before
   public void setupTests() {
-    resource = "rooms/" + UUID.randomUUID().toString().substring(0, 8);
+    resourceName = "users/" + UUID.randomUUID().toString().substring(0, 8);
   }
 
   @AfterClass
@@ -70,7 +70,10 @@ public static void destroyClients() throws InterruptedException {
   @Test
   public void testGrpc_setIamPolicy() {
     SetIamPolicyRequest policyRequest =
-        SetIamPolicyRequest.newBuilder().setPolicy(DEFAULT_POLICY).setResource(resource).build();
+        SetIamPolicyRequest.newBuilder()
+            .setPolicy(DEFAULT_POLICY)
+            .setResource(resourceName)
+            .build();
     Policy policy = grpcClient.setIamPolicy(policyRequest);
     assertThat(policy).isEqualTo(DEFAULT_POLICY);
   }
@@ -78,7 +81,10 @@ public void testGrpc_setIamPolicy() {
   @Test
   public void testHttpJson_setIamPolicy() {
     SetIamPolicyRequest policyRequest =
-        SetIamPolicyRequest.newBuilder().setPolicy(DEFAULT_POLICY).setResource(resource).build();
+        SetIamPolicyRequest.newBuilder()
+            .setPolicy(DEFAULT_POLICY)
+            .setResource(resourceName)
+            .build();
     Policy policy = httpjsonClient.setIamPolicy(policyRequest);
     assertThat(policy).isEqualTo(DEFAULT_POLICY);
   }
@@ -103,7 +109,7 @@ public void testGrpc_setIamPolicy_missingPolicy() {
         InvalidArgumentException.class,
         () ->
             grpcClient.setIamPolicy(
-                SetIamPolicyRequest.newBuilder().setResource(resource).build()));
+                SetIamPolicyRequest.newBuilder().setResource(resourceName).build()));
   }
 
   @Test
@@ -112,13 +118,16 @@ public void testHttpJson_setIamPolicy_missingPolicy() {
         InvalidArgumentException.class,
         () ->
             httpjsonClient.setIamPolicy(
-                SetIamPolicyRequest.newBuilder().setResource(resource).build()));
+                SetIamPolicyRequest.newBuilder().setResource(resourceName).build()));
   }
 
   @Test
   public void testGrpc_getIamPolicy() {
     SetIamPolicyRequest policyRequest =
-        SetIamPolicyRequest.newBuilder().setPolicy(DEFAULT_POLICY).setResource(resource).build();
+        SetIamPolicyRequest.newBuilder()
+            .setPolicy(DEFAULT_POLICY)
+            .setResource(resourceName)
+            .build();
     grpcClient.setIamPolicy(policyRequest);
 
     Policy policy =
@@ -130,7 +139,10 @@ public void testGrpc_getIamPolicy() {
   @Test
   public void testHttpJson_getIamPolicy() {
     SetIamPolicyRequest policyRequest =
-        SetIamPolicyRequest.newBuilder().setPolicy(DEFAULT_POLICY).setResource(resource).build();
+        SetIamPolicyRequest.newBuilder()
+            .setPolicy(DEFAULT_POLICY)
+            .setResource(resourceName)
+            .build();
     httpjsonClient.setIamPolicy(policyRequest);
 
     Policy policy =
@@ -145,7 +157,7 @@ public void testGrpc_getIamPolicy_doesNotExist() {
         NotFoundException.class,
         () ->
             grpcClient.getIamPolicy(
-                GetIamPolicyRequest.newBuilder().setResource(resource).build()));
+                GetIamPolicyRequest.newBuilder().setResource(resourceName).build()));
   }
 
   @Test
@@ -154,7 +166,7 @@ public void testHttpJson_getIamPolicy_doesNotExist() {
         NotFoundException.class,
         () ->
             httpjsonClient.getIamPolicy(
-                GetIamPolicyRequest.newBuilder().setResource(resource).build()));
+                GetIamPolicyRequest.newBuilder().setResource(resourceName).build()));
   }
 
   @Test
@@ -174,7 +186,10 @@ public void testHttpJson_getIamPolicy_missingResource() {
   @Test
   public void testGrpc_testIamPermissions() {
     SetIamPolicyRequest policyRequest =
-        SetIamPolicyRequest.newBuilder().setPolicy(DEFAULT_POLICY).setResource(resource).build();
+        SetIamPolicyRequest.newBuilder()
+            .setPolicy(DEFAULT_POLICY)
+            .setResource(resourceName)
+            .build();
     grpcClient.setIamPolicy(policyRequest);
     List<String> permissions = ImmutableList.of("foo.create");
     TestIamPermissionsResponse testIamPermissionsResponse =
@@ -190,7 +205,10 @@ public void testGrpc_testIamPermissions() {
   @Test
   public void testHttpJson_testIamPermissions() {
     SetIamPolicyRequest policyRequest =
-        SetIamPolicyRequest.newBuilder().setPolicy(DEFAULT_POLICY).setResource(resource).build();
+        SetIamPolicyRequest.newBuilder()
+            .setPolicy(DEFAULT_POLICY)
+            .setResource(resourceName)
+            .build();
     httpjsonClient.setIamPolicy(policyRequest);
     List<String> permissions = ImmutableList.of("foo.create");
     TestIamPermissionsResponse testIamPermissionsResponse =
@@ -209,7 +227,7 @@ public void testGrpc_testIamPermissions_doesNotExist() {
         NotFoundException.class,
         () ->
             grpcClient.testIamPermissions(
-                TestIamPermissionsRequest.newBuilder().setResource(resource).build()));
+                TestIamPermissionsRequest.newBuilder().setResource(resourceName).build()));
   }
 
   @Test
@@ -218,7 +236,7 @@ public void testHttpJson_testIamPermissions_doesNotExist() {
         NotFoundException.class,
         () ->
             httpjsonClient.testIamPermissions(
-                TestIamPermissionsRequest.newBuilder().setResource(resource).build()));
+                TestIamPermissionsRequest.newBuilder().setResource(resourceName).build()));
   }
 
   @Test

From 0c7cb469e9ce80a5daf3751f4436bdd866df1dd0 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Wed, 21 Jun 2023 20:09:56 -0400
Subject: [PATCH 20/26] chore: Create user resource to assign policy to

---
 .../com/google/showcase/v1beta1/it/ITIam.java | 54 ++++++++++++++++++-
 1 file changed, 53 insertions(+), 1 deletion(-)

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index 0bd2be7348..dcaaf026ca 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -27,7 +27,9 @@
 import com.google.iam.v1.SetIamPolicyRequest;
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
+import com.google.showcase.v1beta1.CreateUserRequest;
 import com.google.showcase.v1beta1.IdentityClient;
+import com.google.showcase.v1beta1.User;
 import com.google.showcase.v1beta1.it.util.TestClientInitializer;
 import java.util.List;
 import java.util.UUID;
@@ -44,6 +46,7 @@ public class ITIam {
           .build();
   private static IdentityClient grpcClient;
   private static IdentityClient httpjsonClient;
+  private String userId;
   private String resourceName;
 
   @BeforeClass
@@ -54,7 +57,8 @@ public static void createClients() throws Exception {
 
   @Before
   public void setupTests() {
-    resourceName = "users/" + UUID.randomUUID().toString().substring(0, 8);
+    userId = UUID.randomUUID().toString().substring(0, 8);
+    resourceName = "users/" + userId;
   }
 
   @AfterClass
@@ -69,6 +73,14 @@ public static void destroyClients() throws InterruptedException {
 
   @Test
   public void testGrpc_setIamPolicy() {
+    grpcClient.createUser(
+        CreateUserRequest.newBuilder()
+            .setUser(
+                User.newBuilder()
+                    .setName(userId)
+                    .setDisplayName(userId)
+                    .setEmail(userId + "@google.com"))
+            .build());
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder()
             .setPolicy(DEFAULT_POLICY)
@@ -80,6 +92,14 @@ public void testGrpc_setIamPolicy() {
 
   @Test
   public void testHttpJson_setIamPolicy() {
+    httpjsonClient.createUser(
+        CreateUserRequest.newBuilder()
+            .setUser(
+                User.newBuilder()
+                    .setName(userId)
+                    .setDisplayName(userId)
+                    .setEmail(userId + "@google.com"))
+            .build());
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder()
             .setPolicy(DEFAULT_POLICY)
@@ -123,6 +143,14 @@ public void testHttpJson_setIamPolicy_missingPolicy() {
 
   @Test
   public void testGrpc_getIamPolicy() {
+    grpcClient.createUser(
+        CreateUserRequest.newBuilder()
+            .setUser(
+                User.newBuilder()
+                    .setName(userId)
+                    .setDisplayName(userId)
+                    .setEmail(userId + "@google.com"))
+            .build());
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder()
             .setPolicy(DEFAULT_POLICY)
@@ -138,6 +166,14 @@ public void testGrpc_getIamPolicy() {
 
   @Test
   public void testHttpJson_getIamPolicy() {
+    httpjsonClient.createUser(
+        CreateUserRequest.newBuilder()
+            .setUser(
+                User.newBuilder()
+                    .setName(userId)
+                    .setDisplayName(userId)
+                    .setEmail(userId + "@google.com"))
+            .build());
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder()
             .setPolicy(DEFAULT_POLICY)
@@ -185,6 +221,14 @@ public void testHttpJson_getIamPolicy_missingResource() {
 
   @Test
   public void testGrpc_testIamPermissions() {
+    grpcClient.createUser(
+        CreateUserRequest.newBuilder()
+            .setUser(
+                User.newBuilder()
+                    .setName(userId)
+                    .setDisplayName(userId)
+                    .setEmail(userId + "@google.com"))
+            .build());
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder()
             .setPolicy(DEFAULT_POLICY)
@@ -204,6 +248,14 @@ public void testGrpc_testIamPermissions() {
 
   @Test
   public void testHttpJson_testIamPermissions() {
+    httpjsonClient.createUser(
+        CreateUserRequest.newBuilder()
+            .setUser(
+                User.newBuilder()
+                    .setName(userId)
+                    .setDisplayName(userId)
+                    .setEmail(userId + "@google.com"))
+            .build());
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder()
             .setPolicy(DEFAULT_POLICY)

From 0c4222fbf9088f9ca0759f3b0572d9ab37601719 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Wed, 21 Jun 2023 20:23:20 -0400
Subject: [PATCH 21/26] chore: Use user's name as resource id

---
 .../com/google/showcase/v1beta1/it/ITIam.java | 81 +++++++------------
 1 file changed, 31 insertions(+), 50 deletions(-)

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index dcaaf026ca..f28c85e371 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -73,18 +73,15 @@ public static void destroyClients() throws InterruptedException {
 
   @Test
   public void testGrpc_setIamPolicy() {
-    grpcClient.createUser(
-        CreateUserRequest.newBuilder()
-            .setUser(
-                User.newBuilder()
-                    .setName(userId)
-                    .setDisplayName(userId)
-                    .setEmail(userId + "@google.com"))
-            .build());
+    User user =
+        grpcClient.createUser(
+            CreateUserRequest.newBuilder()
+                .setUser(User.newBuilder().setDisplayName(userId).setEmail(userId + "@google.com"))
+                .build());
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder()
             .setPolicy(DEFAULT_POLICY)
-            .setResource(resourceName)
+            .setResource(user.getName())
             .build();
     Policy policy = grpcClient.setIamPolicy(policyRequest);
     assertThat(policy).isEqualTo(DEFAULT_POLICY);
@@ -92,18 +89,15 @@ public void testGrpc_setIamPolicy() {
 
   @Test
   public void testHttpJson_setIamPolicy() {
-    httpjsonClient.createUser(
-        CreateUserRequest.newBuilder()
-            .setUser(
-                User.newBuilder()
-                    .setName(userId)
-                    .setDisplayName(userId)
-                    .setEmail(userId + "@google.com"))
-            .build());
+    User user =
+        httpjsonClient.createUser(
+            CreateUserRequest.newBuilder()
+                .setUser(User.newBuilder().setDisplayName(userId).setEmail(userId + "@google.com"))
+                .build());
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder()
             .setPolicy(DEFAULT_POLICY)
-            .setResource(resourceName)
+            .setResource(user.getName())
             .build();
     Policy policy = httpjsonClient.setIamPolicy(policyRequest);
     assertThat(policy).isEqualTo(DEFAULT_POLICY);
@@ -143,18 +137,15 @@ public void testHttpJson_setIamPolicy_missingPolicy() {
 
   @Test
   public void testGrpc_getIamPolicy() {
-    grpcClient.createUser(
-        CreateUserRequest.newBuilder()
-            .setUser(
-                User.newBuilder()
-                    .setName(userId)
-                    .setDisplayName(userId)
-                    .setEmail(userId + "@google.com"))
-            .build());
+    User user =
+        grpcClient.createUser(
+            CreateUserRequest.newBuilder()
+                .setUser(User.newBuilder().setDisplayName(userId).setEmail(userId + "@google.com"))
+                .build());
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder()
             .setPolicy(DEFAULT_POLICY)
-            .setResource(resourceName)
+            .setResource(user.getName())
             .build();
     grpcClient.setIamPolicy(policyRequest);
 
@@ -166,18 +157,15 @@ public void testGrpc_getIamPolicy() {
 
   @Test
   public void testHttpJson_getIamPolicy() {
-    httpjsonClient.createUser(
-        CreateUserRequest.newBuilder()
-            .setUser(
-                User.newBuilder()
-                    .setName(userId)
-                    .setDisplayName(userId)
-                    .setEmail(userId + "@google.com"))
-            .build());
+    User user =
+        httpjsonClient.createUser(
+            CreateUserRequest.newBuilder()
+                .setUser(User.newBuilder().setDisplayName(userId).setEmail(userId + "@google.com"))
+                .build());
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder()
             .setPolicy(DEFAULT_POLICY)
-            .setResource(resourceName)
+            .setResource(user.getName())
             .build();
     httpjsonClient.setIamPolicy(policyRequest);
 
@@ -223,11 +211,7 @@ public void testHttpJson_getIamPolicy_missingResource() {
   public void testGrpc_testIamPermissions() {
     grpcClient.createUser(
         CreateUserRequest.newBuilder()
-            .setUser(
-                User.newBuilder()
-                    .setName(userId)
-                    .setDisplayName(userId)
-                    .setEmail(userId + "@google.com"))
+            .setUser(User.newBuilder().setDisplayName(userId).setEmail(userId + "@google.com"))
             .build());
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder()
@@ -248,18 +232,15 @@ public void testGrpc_testIamPermissions() {
 
   @Test
   public void testHttpJson_testIamPermissions() {
-    httpjsonClient.createUser(
-        CreateUserRequest.newBuilder()
-            .setUser(
-                User.newBuilder()
-                    .setName(userId)
-                    .setDisplayName(userId)
-                    .setEmail(userId + "@google.com"))
-            .build());
+    User user =
+        httpjsonClient.createUser(
+            CreateUserRequest.newBuilder()
+                .setUser(User.newBuilder().setDisplayName(userId).setEmail(userId + "@google.com"))
+                .build());
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder()
             .setPolicy(DEFAULT_POLICY)
-            .setResource(resourceName)
+            .setResource(user.getName())
             .build();
     httpjsonClient.setIamPolicy(policyRequest);
     List<String> permissions = ImmutableList.of("foo.create");

From adfad68e81edcd3379074fbe94b6116b3cf764f9 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Thu, 22 Jun 2023 11:27:49 -0400
Subject: [PATCH 22/26] chore: Change resource name before each test

---
 .../com/google/showcase/v1beta1/it/ITIam.java | 45 +++----------------
 1 file changed, 6 insertions(+), 39 deletions(-)

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index f28c85e371..0bd2be7348 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -27,9 +27,7 @@
 import com.google.iam.v1.SetIamPolicyRequest;
 import com.google.iam.v1.TestIamPermissionsRequest;
 import com.google.iam.v1.TestIamPermissionsResponse;
-import com.google.showcase.v1beta1.CreateUserRequest;
 import com.google.showcase.v1beta1.IdentityClient;
-import com.google.showcase.v1beta1.User;
 import com.google.showcase.v1beta1.it.util.TestClientInitializer;
 import java.util.List;
 import java.util.UUID;
@@ -46,7 +44,6 @@ public class ITIam {
           .build();
   private static IdentityClient grpcClient;
   private static IdentityClient httpjsonClient;
-  private String userId;
   private String resourceName;
 
   @BeforeClass
@@ -57,8 +54,7 @@ public static void createClients() throws Exception {
 
   @Before
   public void setupTests() {
-    userId = UUID.randomUUID().toString().substring(0, 8);
-    resourceName = "users/" + userId;
+    resourceName = "users/" + UUID.randomUUID().toString().substring(0, 8);
   }
 
   @AfterClass
@@ -73,15 +69,10 @@ public static void destroyClients() throws InterruptedException {
 
   @Test
   public void testGrpc_setIamPolicy() {
-    User user =
-        grpcClient.createUser(
-            CreateUserRequest.newBuilder()
-                .setUser(User.newBuilder().setDisplayName(userId).setEmail(userId + "@google.com"))
-                .build());
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder()
             .setPolicy(DEFAULT_POLICY)
-            .setResource(user.getName())
+            .setResource(resourceName)
             .build();
     Policy policy = grpcClient.setIamPolicy(policyRequest);
     assertThat(policy).isEqualTo(DEFAULT_POLICY);
@@ -89,15 +80,10 @@ public void testGrpc_setIamPolicy() {
 
   @Test
   public void testHttpJson_setIamPolicy() {
-    User user =
-        httpjsonClient.createUser(
-            CreateUserRequest.newBuilder()
-                .setUser(User.newBuilder().setDisplayName(userId).setEmail(userId + "@google.com"))
-                .build());
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder()
             .setPolicy(DEFAULT_POLICY)
-            .setResource(user.getName())
+            .setResource(resourceName)
             .build();
     Policy policy = httpjsonClient.setIamPolicy(policyRequest);
     assertThat(policy).isEqualTo(DEFAULT_POLICY);
@@ -137,15 +123,10 @@ public void testHttpJson_setIamPolicy_missingPolicy() {
 
   @Test
   public void testGrpc_getIamPolicy() {
-    User user =
-        grpcClient.createUser(
-            CreateUserRequest.newBuilder()
-                .setUser(User.newBuilder().setDisplayName(userId).setEmail(userId + "@google.com"))
-                .build());
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder()
             .setPolicy(DEFAULT_POLICY)
-            .setResource(user.getName())
+            .setResource(resourceName)
             .build();
     grpcClient.setIamPolicy(policyRequest);
 
@@ -157,15 +138,10 @@ public void testGrpc_getIamPolicy() {
 
   @Test
   public void testHttpJson_getIamPolicy() {
-    User user =
-        httpjsonClient.createUser(
-            CreateUserRequest.newBuilder()
-                .setUser(User.newBuilder().setDisplayName(userId).setEmail(userId + "@google.com"))
-                .build());
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder()
             .setPolicy(DEFAULT_POLICY)
-            .setResource(user.getName())
+            .setResource(resourceName)
             .build();
     httpjsonClient.setIamPolicy(policyRequest);
 
@@ -209,10 +185,6 @@ public void testHttpJson_getIamPolicy_missingResource() {
 
   @Test
   public void testGrpc_testIamPermissions() {
-    grpcClient.createUser(
-        CreateUserRequest.newBuilder()
-            .setUser(User.newBuilder().setDisplayName(userId).setEmail(userId + "@google.com"))
-            .build());
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder()
             .setPolicy(DEFAULT_POLICY)
@@ -232,15 +204,10 @@ public void testGrpc_testIamPermissions() {
 
   @Test
   public void testHttpJson_testIamPermissions() {
-    User user =
-        httpjsonClient.createUser(
-            CreateUserRequest.newBuilder()
-                .setUser(User.newBuilder().setDisplayName(userId).setEmail(userId + "@google.com"))
-                .build());
     SetIamPolicyRequest policyRequest =
         SetIamPolicyRequest.newBuilder()
             .setPolicy(DEFAULT_POLICY)
-            .setResource(user.getName())
+            .setResource(resourceName)
             .build();
     httpjsonClient.setIamPolicy(policyRequest);
     List<String> permissions = ImmutableList.of("foo.create");

From 5346d43407775268f21cf17c26410c85c8fe8189 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Wed, 5 Jul 2023 17:08:51 -0400
Subject: [PATCH 23/26] chore: Add iam-grpc in pom

---
 showcase/gapic-showcase/pom.xml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/showcase/gapic-showcase/pom.xml b/showcase/gapic-showcase/pom.xml
index f4adf3e0c7..9fe7908f3c 100644
--- a/showcase/gapic-showcase/pom.xml
+++ b/showcase/gapic-showcase/pom.xml
@@ -237,5 +237,10 @@
       <classifier>testlib</classifier>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>com.google.api.grpc</groupId>
+      <artifactId>grpc-google-iam-v1</artifactId>
+      <scope>test</scope>
+    </dependency>
   </dependencies>
 </project>

From 1682e0acbb1e477a22048dc4e171b096a41b09f8 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Wed, 5 Jul 2023 17:25:25 -0400
Subject: [PATCH 24/26] chore: Resolve sonar issues

---
 .../com/google/showcase/v1beta1/it/ITIam.java | 71 +++++++++----------
 1 file changed, 34 insertions(+), 37 deletions(-)

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index 0bd2be7348..dcb338fd1a 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -91,34 +91,32 @@ public void testHttpJson_setIamPolicy() {
 
   @Test
   public void testGrpc_setIamPolicy_missingResource() {
+    SetIamPolicyRequest setIamPolicyRequest = SetIamPolicyRequest.newBuilder().build();
     assertThrows(
-        InvalidArgumentException.class,
-        () -> grpcClient.setIamPolicy(SetIamPolicyRequest.newBuilder().build()));
+        InvalidArgumentException.class, () -> grpcClient.setIamPolicy(setIamPolicyRequest));
   }
 
   @Test
   public void testHttpJson_setIamPolicy_missingResource() {
+    SetIamPolicyRequest setIamPolicyRequest = SetIamPolicyRequest.newBuilder().build();
     assertThrows(
-        InvalidArgumentException.class,
-        () -> httpjsonClient.setIamPolicy(SetIamPolicyRequest.newBuilder().build()));
+        InvalidArgumentException.class, () -> httpjsonClient.setIamPolicy(setIamPolicyRequest));
   }
 
   @Test
   public void testGrpc_setIamPolicy_missingPolicy() {
+    SetIamPolicyRequest setIamPolicyRequest =
+        SetIamPolicyRequest.newBuilder().setResource(resourceName).build();
     assertThrows(
-        InvalidArgumentException.class,
-        () ->
-            grpcClient.setIamPolicy(
-                SetIamPolicyRequest.newBuilder().setResource(resourceName).build()));
+        InvalidArgumentException.class, () -> grpcClient.setIamPolicy(setIamPolicyRequest));
   }
 
   @Test
   public void testHttpJson_setIamPolicy_missingPolicy() {
+    SetIamPolicyRequest setIamPolicyRequest =
+        SetIamPolicyRequest.newBuilder().setResource(resourceName).build();
     assertThrows(
-        InvalidArgumentException.class,
-        () ->
-            httpjsonClient.setIamPolicy(
-                SetIamPolicyRequest.newBuilder().setResource(resourceName).build()));
+        InvalidArgumentException.class, () -> httpjsonClient.setIamPolicy(setIamPolicyRequest));
   }
 
   @Test
@@ -153,34 +151,30 @@ public void testHttpJson_getIamPolicy() {
 
   @Test
   public void testGrpc_getIamPolicy_doesNotExist() {
-    assertThrows(
-        NotFoundException.class,
-        () ->
-            grpcClient.getIamPolicy(
-                GetIamPolicyRequest.newBuilder().setResource(resourceName).build()));
+    GetIamPolicyRequest getIamPolicyRequest =
+        GetIamPolicyRequest.newBuilder().setResource(resourceName).build();
+    assertThrows(NotFoundException.class, () -> grpcClient.getIamPolicy(getIamPolicyRequest));
   }
 
   @Test
   public void testHttpJson_getIamPolicy_doesNotExist() {
-    assertThrows(
-        NotFoundException.class,
-        () ->
-            httpjsonClient.getIamPolicy(
-                GetIamPolicyRequest.newBuilder().setResource(resourceName).build()));
+    GetIamPolicyRequest getIamPolicyRequest =
+        GetIamPolicyRequest.newBuilder().setResource(resourceName).build();
+    assertThrows(NotFoundException.class, () -> httpjsonClient.getIamPolicy(getIamPolicyRequest));
   }
 
   @Test
   public void testGrpc_getIamPolicy_missingResource() {
+    GetIamPolicyRequest getIamPolicyRequest = GetIamPolicyRequest.newBuilder().build();
     assertThrows(
-        InvalidArgumentException.class,
-        () -> grpcClient.getIamPolicy(GetIamPolicyRequest.newBuilder().build()));
+        InvalidArgumentException.class, () -> grpcClient.getIamPolicy(getIamPolicyRequest));
   }
 
   @Test
   public void testHttpJson_getIamPolicy_missingResource() {
+    GetIamPolicyRequest getIamPolicyRequest = GetIamPolicyRequest.newBuilder().build();
     assertThrows(
-        InvalidArgumentException.class,
-        () -> httpjsonClient.getIamPolicy(GetIamPolicyRequest.newBuilder().build()));
+        InvalidArgumentException.class, () -> httpjsonClient.getIamPolicy(getIamPolicyRequest));
   }
 
   @Test
@@ -191,7 +185,7 @@ public void testGrpc_testIamPermissions() {
             .setResource(resourceName)
             .build();
     grpcClient.setIamPolicy(policyRequest);
-    List<String> permissions = ImmutableList.of("foo.create");
+    List<String> permissions = ImmutableList.of("foo.create", "foo.write");
     TestIamPermissionsResponse testIamPermissionsResponse =
         grpcClient.testIamPermissions(
             TestIamPermissionsRequest.newBuilder()
@@ -210,7 +204,7 @@ public void testHttpJson_testIamPermissions() {
             .setResource(resourceName)
             .build();
     httpjsonClient.setIamPolicy(policyRequest);
-    List<String> permissions = ImmutableList.of("foo.create");
+    List<String> permissions = ImmutableList.of("foo.create", "foo.write");
     TestIamPermissionsResponse testIamPermissionsResponse =
         httpjsonClient.testIamPermissions(
             TestIamPermissionsRequest.newBuilder()
@@ -223,33 +217,36 @@ public void testHttpJson_testIamPermissions() {
 
   @Test
   public void testGrpc_testIamPermissions_doesNotExist() {
+    TestIamPermissionsRequest testIamPermissionsRequest =
+        TestIamPermissionsRequest.newBuilder().setResource(resourceName).build();
     assertThrows(
-        NotFoundException.class,
-        () ->
-            grpcClient.testIamPermissions(
-                TestIamPermissionsRequest.newBuilder().setResource(resourceName).build()));
+        NotFoundException.class, () -> grpcClient.testIamPermissions(testIamPermissionsRequest));
   }
 
   @Test
   public void testHttpJson_testIamPermissions_doesNotExist() {
+    TestIamPermissionsRequest testIamPermissionsRequest =
+        TestIamPermissionsRequest.newBuilder().setResource(resourceName).build();
     assertThrows(
         NotFoundException.class,
-        () ->
-            httpjsonClient.testIamPermissions(
-                TestIamPermissionsRequest.newBuilder().setResource(resourceName).build()));
+        () -> httpjsonClient.testIamPermissions(testIamPermissionsRequest));
   }
 
   @Test
   public void testGrpc_testIamPermissions_missingResource() {
+    TestIamPermissionsRequest testIamPermissionsRequest =
+        TestIamPermissionsRequest.newBuilder().build();
     assertThrows(
         InvalidArgumentException.class,
-        () -> grpcClient.testIamPermissions(TestIamPermissionsRequest.newBuilder().build()));
+        () -> grpcClient.testIamPermissions(testIamPermissionsRequest));
   }
 
   @Test
   public void testHttpJson_testIamPermissions_missingResource() {
+    TestIamPermissionsRequest testIamPermissionsRequest =
+        TestIamPermissionsRequest.newBuilder().build();
     assertThrows(
         InvalidArgumentException.class,
-        () -> httpjsonClient.testIamPermissions(TestIamPermissionsRequest.newBuilder().build()));
+        () -> httpjsonClient.testIamPermissions(testIamPermissionsRequest));
   }
 }

From a3fb65ba2b4421c63f4181b0ed244467bce4b18a Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Wed, 5 Jul 2023 17:43:11 -0400
Subject: [PATCH 25/26] chore: Add comment for testIamPolicy

---
 .../src/test/java/com/google/showcase/v1beta1/it/ITIam.java   | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index dcb338fd1a..9786d2a403 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -192,6 +192,8 @@ public void testGrpc_testIamPermissions() {
                 .setResource(policyRequest.getResource())
                 .addAllPermissions(permissions)
                 .build());
+    // Showcase server will simply echo the request's Permissions List back
+    // if the resource exists and contains a policy
     assertThat(testIamPermissionsResponse.getPermissionsList())
         .containsExactlyElementsIn(permissions);
   }
@@ -211,6 +213,8 @@ public void testHttpJson_testIamPermissions() {
                 .setResource(policyRequest.getResource())
                 .addAllPermissions(permissions)
                 .build());
+    // Showcase server will simply echo the request's Permissions List back
+    // if the resource exists and contains a policy
     assertThat(testIamPermissionsResponse.getPermissionsList())
         .containsExactlyElementsIn(permissions);
   }

From bf336276c86ba8ecc631e132847f4ff8b67a7cf9 Mon Sep 17 00:00:00 2001
From: Lawrence Qiu <lawrenceqiu@google.com>
Date: Fri, 7 Jul 2023 13:28:40 -0400
Subject: [PATCH 26/26] chore: Address PR comments

---
 .../com/google/showcase/v1beta1/it/ITIam.java | 96 ++-----------------
 1 file changed, 10 insertions(+), 86 deletions(-)

diff --git a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
index 9786d2a403..181608571a 100644
--- a/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
+++ b/showcase/gapic-showcase/src/test/java/com/google/showcase/v1beta1/it/ITIam.java
@@ -19,7 +19,6 @@
 import static org.junit.Assert.assertThrows;
 
 import com.google.api.gax.rpc.InvalidArgumentException;
-import com.google.api.gax.rpc.NotFoundException;
 import com.google.common.collect.ImmutableList;
 import com.google.iam.v1.Binding;
 import com.google.iam.v1.GetIamPolicyRequest;
@@ -89,36 +88,6 @@ public void testHttpJson_setIamPolicy() {
     assertThat(policy).isEqualTo(DEFAULT_POLICY);
   }
 
-  @Test
-  public void testGrpc_setIamPolicy_missingResource() {
-    SetIamPolicyRequest setIamPolicyRequest = SetIamPolicyRequest.newBuilder().build();
-    assertThrows(
-        InvalidArgumentException.class, () -> grpcClient.setIamPolicy(setIamPolicyRequest));
-  }
-
-  @Test
-  public void testHttpJson_setIamPolicy_missingResource() {
-    SetIamPolicyRequest setIamPolicyRequest = SetIamPolicyRequest.newBuilder().build();
-    assertThrows(
-        InvalidArgumentException.class, () -> httpjsonClient.setIamPolicy(setIamPolicyRequest));
-  }
-
-  @Test
-  public void testGrpc_setIamPolicy_missingPolicy() {
-    SetIamPolicyRequest setIamPolicyRequest =
-        SetIamPolicyRequest.newBuilder().setResource(resourceName).build();
-    assertThrows(
-        InvalidArgumentException.class, () -> grpcClient.setIamPolicy(setIamPolicyRequest));
-  }
-
-  @Test
-  public void testHttpJson_setIamPolicy_missingPolicy() {
-    SetIamPolicyRequest setIamPolicyRequest =
-        SetIamPolicyRequest.newBuilder().setResource(resourceName).build();
-    assertThrows(
-        InvalidArgumentException.class, () -> httpjsonClient.setIamPolicy(setIamPolicyRequest));
-  }
-
   @Test
   public void testGrpc_getIamPolicy() {
     SetIamPolicyRequest policyRequest =
@@ -149,34 +118,6 @@ public void testHttpJson_getIamPolicy() {
     assertThat(policy).isEqualTo(DEFAULT_POLICY);
   }
 
-  @Test
-  public void testGrpc_getIamPolicy_doesNotExist() {
-    GetIamPolicyRequest getIamPolicyRequest =
-        GetIamPolicyRequest.newBuilder().setResource(resourceName).build();
-    assertThrows(NotFoundException.class, () -> grpcClient.getIamPolicy(getIamPolicyRequest));
-  }
-
-  @Test
-  public void testHttpJson_getIamPolicy_doesNotExist() {
-    GetIamPolicyRequest getIamPolicyRequest =
-        GetIamPolicyRequest.newBuilder().setResource(resourceName).build();
-    assertThrows(NotFoundException.class, () -> httpjsonClient.getIamPolicy(getIamPolicyRequest));
-  }
-
-  @Test
-  public void testGrpc_getIamPolicy_missingResource() {
-    GetIamPolicyRequest getIamPolicyRequest = GetIamPolicyRequest.newBuilder().build();
-    assertThrows(
-        InvalidArgumentException.class, () -> grpcClient.getIamPolicy(getIamPolicyRequest));
-  }
-
-  @Test
-  public void testHttpJson_getIamPolicy_missingResource() {
-    GetIamPolicyRequest getIamPolicyRequest = GetIamPolicyRequest.newBuilder().build();
-    assertThrows(
-        InvalidArgumentException.class, () -> httpjsonClient.getIamPolicy(getIamPolicyRequest));
-  }
-
   @Test
   public void testGrpc_testIamPermissions() {
     SetIamPolicyRequest policyRequest =
@@ -219,38 +160,21 @@ public void testHttpJson_testIamPermissions() {
         .containsExactlyElementsIn(permissions);
   }
 
+  // The tests below simply assert that an exception is being thrown for an invalid request
+  // in both transports. Showcase's IAM backend service will throw a few exceptions for a few
+  // cases, and we simply assert that an exception has been thrown for a single case with a single
+  // RPC (No resource in the request for SetIamPolicy's RPC).
   @Test
-  public void testGrpc_testIamPermissions_doesNotExist() {
-    TestIamPermissionsRequest testIamPermissionsRequest =
-        TestIamPermissionsRequest.newBuilder().setResource(resourceName).build();
-    assertThrows(
-        NotFoundException.class, () -> grpcClient.testIamPermissions(testIamPermissionsRequest));
-  }
-
-  @Test
-  public void testHttpJson_testIamPermissions_doesNotExist() {
-    TestIamPermissionsRequest testIamPermissionsRequest =
-        TestIamPermissionsRequest.newBuilder().setResource(resourceName).build();
-    assertThrows(
-        NotFoundException.class,
-        () -> httpjsonClient.testIamPermissions(testIamPermissionsRequest));
-  }
-
-  @Test
-  public void testGrpc_testIamPermissions_missingResource() {
-    TestIamPermissionsRequest testIamPermissionsRequest =
-        TestIamPermissionsRequest.newBuilder().build();
+  public void testGrpc_iamThrowsException() {
+    SetIamPolicyRequest setIamPolicyRequest = SetIamPolicyRequest.newBuilder().build();
     assertThrows(
-        InvalidArgumentException.class,
-        () -> grpcClient.testIamPermissions(testIamPermissionsRequest));
+        InvalidArgumentException.class, () -> grpcClient.setIamPolicy(setIamPolicyRequest));
   }
 
   @Test
-  public void testHttpJson_testIamPermissions_missingResource() {
-    TestIamPermissionsRequest testIamPermissionsRequest =
-        TestIamPermissionsRequest.newBuilder().build();
+  public void testHttpJson_iamThrowsException() {
+    SetIamPolicyRequest setIamPolicyRequest = SetIamPolicyRequest.newBuilder().build();
     assertThrows(
-        InvalidArgumentException.class,
-        () -> httpjsonClient.testIamPermissions(testIamPermissionsRequest));
+        InvalidArgumentException.class, () -> httpjsonClient.setIamPolicy(setIamPolicyRequest));
   }
 }