// be a restorable object). This matches some logic on the Python side.
  if (saved_object_node_id != 0 &&
      (trackable_object->attributes_size() > 0 ||
       trackable_object->slot_variables_size() > 0)) {
    TF_RETURN_WITH_CONTEXT_IF_ERROR(
        callback(saved_object_node_id, *trackable_object), "Unable to restore ",
        object_name);
  }