TF_Status* status = TF_NewStatus();
  auto* api_def_map = TF_NewApiDefMap(op_list_buf, status);
  EXPECT_EQ(TF_OK, TF_GetCode(status)) << TF_Message(status);
  TF_DeleteStatus(status);

  string op_name = "TestCApi";
  status = TF_NewStatus();
  auto* api_def_buf =
      TF_ApiDefMapGet(api_def_map, op_name.c_str(), op_name.size(), status);

TF_CAPI_EXPORT extern void TF_ApiDefMapPut(TF_ApiDefMap* api_def_map,
                                           const char* text, size_t text_len,
                                           TF_Status* status);

// Returns a serialized ApiDef protocol buffer for the TensorFlow operation
// named `name`.
TF_CAPI_EXPORT extern TF_Buffer* TF_ApiDefMapGet(TF_ApiDefMap* api_def_map,