private bool ProcessValidation(IXmppHandlerInvoker i, Element e, XmppSession s, XmppHandlerContext c)
 {
     foreach (var validator in i.Validators)
     {
         var result = validator.ValidateElement(e, s, c);
         if (result != null)
         {
             ProcessResult(result);
             return(false);
         }
     }
     return(true);
 }