Update src/darwin/Framework/CHIP/MTRDeviceControllerDataStore.h

Co-authored-by: Boris Zbarsky <[email protected]>

src/darwin/Framework/CHIP/MTRDeviceControllerDataStore.h

@@ -53,6 +53,7 @@ typedef void (^MTRDeviceControllerDataStoreClusterDataHandler)(NSDictionary<NSNu
 
 /**
  * Asks the data store to load cluster data for nodes in bulk. If the storageDelegate supports it, the handler will be called synchronously.
+ * If the storageDelegate does not support it, the handler will not be called at all.
  */
 - (void)fetchAttributeDataForAllDevices:(MTRDeviceControllerDataStoreClusterDataHandler)clusterDataHandler;