TF_Buffer* metagraph = TF_NewBuffer();
  TF_Status* s = TF_NewStatus();
  const char* tags[] = {tensorflow::kSavedModelTagServe};
  TF_Graph* graph = TF_NewGraph();
  TF_Session* session = TF_LoadSessionFromSavedModel(
      opt, run_options, saved_model_dir.c_str(), tags, 1, graph, metagraph, s);
  TF_DeleteBuffer(run_options);
  TF_DeleteSessionOptions(opt);
  tensorflow::MetaGraphDef metagraph_def;

    }
    return new_session;
  } else {
    LOG(ERROR) << status->status;
    DCHECK_EQ(nullptr, session);
    return nullptr;
  }
}

TF_Session* TF_LoadSessionFromSavedModel(
    const TF_SessionOptions* session_options, const TF_Buffer* run_options,
    const char* export_dir, const char* const* tags, int tags_len,
    TF_Graph* graph, TF_Buffer* meta_graph_def, TF_Status* status) {