GetNodeName(control_ret_node_names, kTfSavedModelInitializerRestoreType);
  const std::string save_node_name =
      GetNodeName(control_ret_node_names, kTfQuantSaveOpName);

  const std::vector<absl::string_view> fields = {
      filename_tensor_name, restore_op_name, save_node_name};
  const auto is_empty_predicate = [](const absl::string_view s) {
    return s.empty();
  };

// Python layer.
// Next ID: 11
message ExportedModel {
  reserved 3, 4, 7, 9;
  reserved 'variable_shared_names';
  reserved 'restore_node_name';
  reserved 'save_node_name';
  reserved 'file_prefix_tensor_name';

  GraphDef graph_def = 1;

  // Name of the initialization node (TF Operation) used for initializing
  // resources like hash tables upon loading.