Address more review comments.

src/darwin/Framework/CHIP/MTRDeviceControllerFactory.mm

@@ -650,11 +650,14 @@ - (MTRDeviceController * _Nullable)_startDeviceController:(id)startupParams
         storageDelegate = params.storageDelegate;
         storageDelegateQueue = params.storageDelegateQueue;
         uniqueIdentifier = params.uniqueIdentifier;
-    } else {
+    } else if ([startupParams isKindOfClass:[MTRDeviceControllerStartupParams class]]) {
         MTRDeviceControllerStartupParams * params = startupParams;
         storageDelegate = nil;
         storageDelegateQueue = nil;
         uniqueIdentifier = params.uniqueIdentifier;
+    } else {
+        MTR_LOG_ERROR("Unknown kind of startup params: %@", startupParams);
+        return nil;
     }
 
     if (_usingPerControllerStorage && storageDelegate == nil) {

src/darwin/Framework/CHIP/MTRDeviceControllerStartupParams.mm

@@ -164,6 +164,12 @@ - (instancetype)initWithParameters:(MTRDeviceControllerStartupParameters *)param
 
     _ipk = params.ipk;
     _vendorID = params.vendorID;
+    // Note: Since we have an operationalCertificate, we do not need a nodeID as
+    // part of our params; it will not be used.  Don't even initialize it, to
+    // avoid confusion about that.
+    //
+    // We don't really use the fabricID for anything either, but we promise to
+    // have a non-nil one, which is why we set it above.
     _nodeID = nil;
     _caseAuthenticatedTags = nil;
     _rootCertificate = params.rootCertificate;

src/darwin/Framework/CHIP/MTRDeviceControllerStorageDelegate.h

@@ -1,5 +1,5 @@
 /**
- *    Copyright (c) 2022-2023 Project CHIP Authors
+ *    Copyright (c) 2023 Project CHIP Authors
  *
  *    Licensed under the Apache License, Version 2.0 (the "License");
  *    you may not use this file except in compliance with the License.
@@ -62,7 +62,7 @@ typedef NS_ENUM(NSUInteger, MTRStorageSharingType) {
  *    it is to get its controllerID.
  *
  * 2) The delegate method calls will happen on the queue that was provided along
- *    with the gelegate.  All Matter work will be blocked until the method
+ *    with the delegate.  All Matter work will be blocked until the method
  *    completes, and these calls may themselves block other Matter API calls
  *    from completing.  Attempting to call any Matter API on the queue used for
  *    this delegate, apart from de-serializing and serializing the items being

src/darwin/Framework/CHIPTests/MTRPerControllerStorageTests.m

@@ -1,5 +1,5 @@
 /*
- *    Copyright (c) 2022-2023 Project CHIP Authors
+ *    Copyright (c) 2023 Project CHIP Authors
  *
  *    Licensed under the Apache License, Version 2.0 (the "License");
  *    you may not use this file except in compliance with the License.