void factory_FileRequestResponseReceived(object sender, FileRequestResponseEventArgs e)
 {
     if (FileRequestResponseReceived!= null)
     {
         FileRequestResponseReceived(sender, e);
     }
 }
 void client_FileRequestResponseReceived(object sender, FileRequestResponseEventArgs e)
 {
     if (_fileRequestResponseCallback != null)
     {
         _fileRequestResponseCallback(e);
     }
 }