private void _ReceiveMessage(string username, string message, DateTime messageReceivedTimeStamp)
 {
     var user = new GTalkUser()
                    {
                        ServiceInfo = _ServiceInformation,
                        UserName = username
                    };
     var messageReceived = new GTalkMessage()
                               {
                                   Address = user,
                                   Text = message,
                                   TimeStamp = messageReceivedTimeStamp
                               };
     if (MessagesReceived != null)
         MessagesReceived(
             this,
             new MessagesReceivedEventArgs(new[] { messageReceived }));
 }