230   struct ServerData {  struct in grpc::testing::__anon9e2563d30111::CFStreamTest
231     int port_;
232     const std::string creds_;
233     std::unique_ptr<Server> server_;
234     TestServiceImpl service_;
235     std::unique_ptr<std::thread> thread_;
236     bool server_ready_ = false;
238     ServerData(int port, const std::string& creds)  in ServerData()  function
241     void Start(const std::string& server_host) {  in Start()
253     void Serve(const std::string& server_host, std::mutex* mu,  in Serve()
268     void Shutdown(bool join = true) {  in Shutdown()