/**
  * inspect update of one record
  *
  * @param   Tinebase_Record_Interface $_record the update record
  * @param   Tinebase_Record_Interface $_oldRecord the current persistent record
  * @return  void
  */
 protected function _inspectBeforeUpdate($_record, $_oldRecord)
 {
     if (!empty($_record->group_id)) {
         // first check if something changed that requires special rights
         $changeGroup = false;
         foreach (Addressbook_Model_List::getManageAccountFields() as $field) {
             if ($_record->{$field} != $_oldRecord->{$field}) {
                 $changeGroup = true;
                 break;
             }
         }
         // then do the update, the group controller will check manage accounts right
         if ($changeGroup) {
             $groupController = Admin_Controller_Group::getInstance();
             $group = $groupController->get($_record->group_id);
             foreach (Addressbook_Model_List::getManageAccountFields() as $field) {
                 $group->{$field} = $_record->{$field};
             }
             $groupController->update($group, false);
         }
     }
 }