public void CreateIndividualRequest_Test()
        {
            var expectedMessage = @"POST http://sample.com/5?q=20
If-Match: ""123""
Content-Type: application/json; charset=utf-8
Content-Length:  40

{""etag_key"":""\""123\"""",""name_key"":""Name""}
";

            using (var service = new MockClientService("http://sample.com"))
            {
                var request = new TestClientServiceRequest(service, new MockRequest
                {
                    ETag = "\"123\"",
                    Name = "Name"
                });
                var content    = BatchRequest.CreateIndividualRequest(request).Result;
                var requestStr = content.ReadAsStringAsync().Result;
                Assert.AreEqual(expectedMessage, requestStr);
            }
        }