public void SendAsync(HttpRequestMessage httpRequestMessage, Action<HttpResponseMessage> httpClientCallback)
 {
     SendAsync(httpRequestMessage.Method, httpRequestMessage.Uri, new HttpContent(httpRequestMessage.Content.Content, httpRequestMessage.Content.ContentType), httpClientCallback);
 }
 public HttpResponseMessage Send(HttpRequestMessage httpRequestMessage)
 {
     throw new NotImplementedException("Not implemented in Silverlight, use Async methods.");
 }