public async void WhenCallToStartNewGame_DoPostRequestWithTheCorrectData()
        {
            const string expectedWord    = "_____";
            const string expectedToken   = "token";
            var          newGameResponse = new GameServerService.NewGameResponse {
                hangman = expectedWord, token = expectedToken
            };

            _restClient.Post <Request, GameServerService.NewGameResponse>(EndPoints.NewGame, Arg.Any <Request>())
            .Returns(newGameResponse);


            var(word, token) = await _gameServerService.StartNewGame();

            Assert.AreEqual(expectedWord, word.Value);
            Assert.AreEqual(expectedToken, token.Value);
        }