diff --git a/google-cloud-clients/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/CloudRedisClient.java b/google-cloud-clients/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/CloudRedisClient.java
index efdf41c9d556..3b06a7d2c1e3 100644
--- a/google-cloud-clients/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/CloudRedisClient.java
+++ b/google-cloud-clients/google-cloud-redis/src/main/java/com/google/cloud/redis/v1/CloudRedisClient.java
@@ -630,7 +630,7 @@ public final OperationFuture<Instance, OperationMetadata> createInstanceAsync(
    *     .setInstanceId(instanceId)
    *     .setInstance(instance)
    *     .build();
-   *   OperationFuture&lt;Operation&gt; future = cloudRedisClient.createInstanceOperationCallable().futureCall(request);
+   *   OperationFuture&lt;Instance, OperationMetadata&gt; future = cloudRedisClient.createInstanceOperationCallable().futureCall(request);
    *   // Do something
    *   Instance response = future.get();
    * }
@@ -799,7 +799,7 @@ public final OperationFuture<Instance, OperationMetadata> updateInstanceAsync(
    *     .setUpdateMask(updateMask)
    *     .setInstance(instance)
    *     .build();
-   *   OperationFuture&lt;Operation&gt; future = cloudRedisClient.updateInstanceOperationCallable().futureCall(request);
+   *   OperationFuture&lt;Instance, OperationMetadata&gt; future = cloudRedisClient.updateInstanceOperationCallable().futureCall(request);
    *   // Do something
    *   Instance response = future.get();
    * }
@@ -858,7 +858,7 @@ public final UnaryCallable<UpdateInstanceRequest, Operation> updateInstanceCalla
    * <pre><code>
    * try (CloudRedisClient cloudRedisClient = CloudRedisClient.create()) {
    *   InstanceName name = InstanceName.of("[PROJECT]", "[LOCATION]", "[INSTANCE]");
-   *   Empty response = cloudRedisClient.deleteInstanceAsync(name).get();
+   *   cloudRedisClient.deleteInstanceAsync(name).get();
    * }
    * </code></pre>
    *
@@ -885,7 +885,7 @@ public final OperationFuture<Empty, OperationMetadata> deleteInstanceAsync(Insta
    * <pre><code>
    * try (CloudRedisClient cloudRedisClient = CloudRedisClient.create()) {
    *   InstanceName name = InstanceName.of("[PROJECT]", "[LOCATION]", "[INSTANCE]");
-   *   Empty response = cloudRedisClient.deleteInstanceAsync(name.toString()).get();
+   *   cloudRedisClient.deleteInstanceAsync(name.toString()).get();
    * }
    * </code></pre>
    *
@@ -914,7 +914,7 @@ public final OperationFuture<Empty, OperationMetadata> deleteInstanceAsync(Strin
    *   DeleteInstanceRequest request = DeleteInstanceRequest.newBuilder()
    *     .setName(name.toString())
    *     .build();
-   *   Empty response = cloudRedisClient.deleteInstanceAsync(request).get();
+   *   cloudRedisClient.deleteInstanceAsync(request).get();
    * }
    * </code></pre>
    *
@@ -940,9 +940,9 @@ public final OperationFuture<Empty, OperationMetadata> deleteInstanceAsync(
    *   DeleteInstanceRequest request = DeleteInstanceRequest.newBuilder()
    *     .setName(name.toString())
    *     .build();
-   *   OperationFuture&lt;Operation&gt; future = cloudRedisClient.deleteInstanceOperationCallable().futureCall(request);
+   *   OperationFuture&lt;Empty, OperationMetadata&gt; future = cloudRedisClient.deleteInstanceOperationCallable().futureCall(request);
    *   // Do something
-   *   Empty response = future.get();
+   *   future.get();
    * }
    * </code></pre>
    */
diff --git a/google-cloud-clients/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/CloudRedisClient.java b/google-cloud-clients/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/CloudRedisClient.java
index b731b850ce07..cc170adda598 100644
--- a/google-cloud-clients/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/CloudRedisClient.java
+++ b/google-cloud-clients/google-cloud-redis/src/main/java/com/google/cloud/redis/v1beta1/CloudRedisClient.java
@@ -630,7 +630,7 @@ public final OperationFuture<Instance, Any> createInstanceAsync(CreateInstanceRe
    *     .setInstanceId(instanceId)
    *     .setInstance(instance)
    *     .build();
-   *   OperationFuture&lt;Operation&gt; future = cloudRedisClient.createInstanceOperationCallable().futureCall(request);
+   *   OperationFuture&lt;Instance, Any&gt; future = cloudRedisClient.createInstanceOperationCallable().futureCall(request);
    *   // Do something
    *   Instance response = future.get();
    * }
@@ -798,7 +798,7 @@ public final OperationFuture<Instance, Any> updateInstanceAsync(UpdateInstanceRe
    *     .setUpdateMask(updateMask)
    *     .setInstance(instance)
    *     .build();
-   *   OperationFuture&lt;Operation&gt; future = cloudRedisClient.updateInstanceOperationCallable().futureCall(request);
+   *   OperationFuture&lt;Instance, Any&gt; future = cloudRedisClient.updateInstanceOperationCallable().futureCall(request);
    *   // Do something
    *   Instance response = future.get();
    * }
@@ -857,7 +857,7 @@ public final UnaryCallable<UpdateInstanceRequest, Operation> updateInstanceCalla
    * <pre><code>
    * try (CloudRedisClient cloudRedisClient = CloudRedisClient.create()) {
    *   InstanceName name = InstanceName.of("[PROJECT]", "[LOCATION]", "[INSTANCE]");
-   *   Empty response = cloudRedisClient.deleteInstanceAsync(name).get();
+   *   cloudRedisClient.deleteInstanceAsync(name).get();
    * }
    * </code></pre>
    *
@@ -884,7 +884,7 @@ public final OperationFuture<Empty, Any> deleteInstanceAsync(InstanceName name)
    * <pre><code>
    * try (CloudRedisClient cloudRedisClient = CloudRedisClient.create()) {
    *   InstanceName name = InstanceName.of("[PROJECT]", "[LOCATION]", "[INSTANCE]");
-   *   Empty response = cloudRedisClient.deleteInstanceAsync(name.toString()).get();
+   *   cloudRedisClient.deleteInstanceAsync(name.toString()).get();
    * }
    * </code></pre>
    *
@@ -913,7 +913,7 @@ public final OperationFuture<Empty, Any> deleteInstanceAsync(String name) {
    *   DeleteInstanceRequest request = DeleteInstanceRequest.newBuilder()
    *     .setName(name.toString())
    *     .build();
-   *   Empty response = cloudRedisClient.deleteInstanceAsync(request).get();
+   *   cloudRedisClient.deleteInstanceAsync(request).get();
    * }
    * </code></pre>
    *
@@ -938,9 +938,9 @@ public final OperationFuture<Empty, Any> deleteInstanceAsync(DeleteInstanceReque
    *   DeleteInstanceRequest request = DeleteInstanceRequest.newBuilder()
    *     .setName(name.toString())
    *     .build();
-   *   OperationFuture&lt;Operation&gt; future = cloudRedisClient.deleteInstanceOperationCallable().futureCall(request);
+   *   OperationFuture&lt;Empty, Any&gt; future = cloudRedisClient.deleteInstanceOperationCallable().futureCall(request);
    *   // Do something
-   *   Empty response = future.get();
+   *   future.get();
    * }
    * </code></pre>
    */
diff --git a/google-cloud-clients/google-cloud-redis/synth.metadata b/google-cloud-clients/google-cloud-redis/synth.metadata
index c4deaff1c724..e7d3f0f8159d 100644
--- a/google-cloud-clients/google-cloud-redis/synth.metadata
+++ b/google-cloud-clients/google-cloud-redis/synth.metadata
@@ -1,19 +1,19 @@
 {
-  "updateTime": "2019-01-17T08:49:36.458402Z",
+  "updateTime": "2019-02-02T08:45:39.488575Z",
   "sources": [
     {
       "generator": {
         "name": "artman",
-        "version": "0.16.6",
-        "dockerImage": "googleapis/artman@sha256:12722f2ca3fbc3b53cc6aa5f0e569d7d221b46bd876a2136497089dec5e3634e"
+        "version": "0.16.8",
+        "dockerImage": "googleapis/artman@sha256:75bc07ef34a1de9895c18af54dc503ed3b3f3b52e85062e3360a979d2a0741e7"
       }
     },
     {
       "git": {
         "name": "googleapis",
         "remote": "https://github.com/googleapis/googleapis.git",
-        "sha": "0ac60e21a1aa86c07c1836865b35308ba8178b05",
-        "internalRef": "229626798"
+        "sha": "bce093dab3e65c40eb9a37efbdc960f34df6037a",
+        "internalRef": "231974277"
       }
     }
   ],