/**
  * @param f_persistentdocument_criteria_Query $query
  * @param form_persistentdocument_baseform $form
  * @return f_persistentdocument_criteria_Query
  */
 private function setConditionalElementsFilter($query, $form)
 {
     return $query->add(Restrictions::descendentOf($form->getId()))->add(Restrictions::isNotNull('activationQuestion'));
 }