def getNotificationTplList(self):
        try:
            if self._notifTpls:
                pass
        except AttributeError:
            self._notifTpls = IOBTree()
        try:
            if self._notifTplsOrder:
                pass
        except AttributeError:
            self._notifTplsOrder = PersistentList()
            for tpl in self._notifTpls.values():
                self._notifTplsOrder.append(tpl)
        return self._notifTplsOrder