protected:
  CApiExperimentalFunctionTest()
      : s_(TF_NewStatus()), func_graph_(TF_NewGraph()), func_(nullptr) {}

  void SetUp() override {}

  ~CApiExperimentalFunctionTest() override {
    TF_DeleteFunction(func_);
    TF_DeleteGraph(func_graph_);
    TF_DeleteStatus(s_);
  }

  const char* func_name_ = "MyFunc";
  TF_Status* s_;
  TF_Graph* func_graph_;
  TF_Function* func_;
};

using tensorflow::FunctionDef;
using tensorflow::Node;
using tensorflow::NodeBuilder;
using tensorflow::Status;
using tensorflow::errors::InvalidArgument;

namespace {
typedef std::unique_ptr<TF_Function, decltype(&TF_DeleteFunction)>
    UniqueFuncPtr;
}

// struct TF_Operation { tensorflow::Node node; };
static TF_Operation* ToTF_Operation(Node* node) {
  return static_cast<TF_Operation*>(static_cast<void*>(node));
}

                        "' has no attr named '", attr_name, "'.");
    return;
  }
  status->status = MessageToBuffer(it->second, output_attr_value);
}

void TF_DeleteFunction(TF_Function* func) {
  if (func == nullptr) {
    return;
  }

  func->record->Unref();
  func->record = nullptr;
  delete func;