const char* oper_name) {
  opts->opts.return_nodes.push_back(oper_name);
}

int TF_ImportGraphDefOptionsNumReturnOperations(
    const TF_ImportGraphDefOptions* opts) {
  return opts->opts.return_nodes.size();
}

void TF_ImportGraphDefResultsReturnOutputs(TF_ImportGraphDefResults* results,