/**
  * @see ListbuilderHandler::getRowInstance()
  */
 function &getRowInstance()
 {
     $row =& parent::getRowInstance();
     // Currently we can't/don't need to delete a row inside multiple
     // lists listbuilder. If we need, we have to adapt this class
     // and its js handler.
     $row->setHasDeleteItemLink(false);
     return $row;
 }