}

  if (!ret) {
    LOG(ERROR) << "failed to update buffer offsets\n";
    return ret;
  }

  auto mutable_subgraphs = mutable_model->mutable_subgraphs();
  for (auto msubgraph : *mutable_subgraphs) {
    auto operators = msubgraph->mutable_operators();
    for (auto op : *operators) {
      auto opcode_idx = op->opcode_index();