code: public ServiceFuture<AppInner> beginUpdateAsync(String resourceGroupName, String resourceName, AppPatch appPatch, final ServiceCallback<AppInner> serviceCallback) {
          return ServiceFuture.fromResponse(beginUpdateWithServiceResponseAsync(resourceGroupName, resourceName, appPatch), serviceCallback);
      }
docs: Update the metadata of an IoT Central application.
  
  @param resourceGroupName The name of the resource group that contains the IoT Central application.
  @param resourceName The ARM resource name of the IoT Central application.
  @param appPatch The IoT Central application metadata and security metadata.
  @param serviceCallback the async ServiceCallback to handle successful and failed responses.
  @throws IllegalArgumentException thrown if parameters fail the validation
  @return the {@link ServiceFuture} object