public async void HttpDeleteSendJsonWithResponseTest()
        {
            ResponseBase result = await _client.Patch()
                                  .Url("http://localhost:3000/ping_pong")
                                  .Send();

            uint statusCode = result.StatusCode();
            var  content    = result.Content <Content>();

            Assert.Equal(200u, statusCode);
            Assert.Equal("pong_patch", content.message);
        }
        public async void HttpPostSendJsonWithResponseTest()
        {
            var message = new Content {
                message = "ping"
            };

            ResponseBase result = await _client.Post().Url("http://localhost:3000/ping_pong")
                                  .AddJson <Content>(message)
                                  .Send();

            uint statusCode = result.StatusCode();
            var  content    = result.Content <Content>();

            Assert.Equal(200u, statusCode);
            Assert.Equal("pong", content.message);
        }