/**
  * @see parent::loadFwdRef()
  *
  * Required because of the ex_object_id field
  */
 function loadFwdRef($field, $cached = false)
 {
     if ($field === "ex_object_id") {
         $ex_object = new CExObject($this->ex_class_id);
         $ex_object->load($this->ex_object_id);
         return $this->_fwd[$field] = $ex_object;
     }
     return parent::loadFwdRef($field, $cached);
 }