/**
  * @param form_persistentdocument_form $newDocument
  * @param form_persistentdocument_form $originalDocument
  * @param Integer $parentNodeId
  */
 protected function preDuplicate($newDocument, $originalDocument, $parentNodeId)
 {
     parent::preDuplicate($newDocument, $originalDocument, $parentNodeId);
     $newDocument->setNotification(null);
     $newDocument->setResponseCount(0);
     $newDocument->setArchivedResponseCount(0);
 }