/**
  * @param $Event Event identifier.
  * @return RecurrenceSet,NULL.
  */
 function GetEventRecur(&$Event)
 {
     if (is_numeric($Event)) {
         $CI =& get_instance();
         $RecurrenceInfo = $CI->recurrence_model->SelectRecurByEvent($Event);
         $RecurrenceSet = new RecurrenceSet();
         $RecurrenceSet->SetRecurData($RecurrenceInfo);
         return $RecurrenceSet;
     } else {
         return parent::GetEventRecur($Event);
     }
 }