public function removeTask($iTaskID)
 {
     $oRepository = new TaskListRepository();
     return $oRepository->deleteListByUserID($iTaskID);
 }
 public function removeList(User $oUser, $iListID)
 {
     $oRepository = new TaskListRepository();
     return $oRepository->deleteListByUserID($oUser->getID(), $iListID);
 }