}

  std::string identifier = saved_object_proto.user_object().identifier();
  if (identifier == "trackable_list_wrapper") {
    tf::libtf::List user_list;
    // TODO(b/191267013): Populate with values.
    return user_list;
  }
  if (identifier == "trackable_dict_wrapper") {
    tf::libtf::Dictionary user_dict;
    // TODO(b/191267013): Populate with values.
    return user_dict;
  }