protected override void OnQueryErrorReceived(object sender, XmppQueryErrorReceivedEventArgs e)
 {
     if (this.pendingMessages.Contains(e.IQError.ID))
     {
         this.pendingMessages.Remove(e.IQError.ID);
     }
 }
 protected override void OnQueryErrorReceived(object sender, XmppQueryErrorReceivedEventArgs e)
 {
     if (this.pendingMessages.Contains(e.IQError.ID))
     {
         this.pendingMessages.Remove(e.IQError.ID);
     }
 }