code: @Override
    public void createEmptyObject(StorageResourceId resourceId)
        throws IOException {
      logger.atFine().log("createEmptyObject(%s)", resourceId);
      Preconditions.checkArgument(
          resourceId.isStorageObject(), "Expected full StorageObject id, got %s", resourceId);
      createEmptyObject(resourceId, CreateObjectOptions.DEFAULT);
    }
docs: See {@link GoogleCloudStorage#createEmptyObject(StorageResourceId)} for details about
  expected behavior.