def test_deferred_map_event_subclass_no_propagate(self):
        users, User = (self.tables.users,
                       self.classes.User)

        class SubUser(User):
            pass

        canary = []

        def evt(x, y, z):
            canary.append(x)
        event.listen(User, "before_insert", evt, propagate=False)

        m = mapper(SubUser, users)
        m.dispatch.before_insert(5, 6, 7)
        eq_(canary, [])
This optional method should return an iterable of index names. These
dataset/ETHPy150Open zzzeek/sqlalchemy/test/orm/test_events.py/DeferredMapperEventsTest.test_deferred_map_event_subclass_no_propagate--crossover with--dataset/ETHPy150Open memphis-iis/GLUDB/gludb/data.py/Storable.index_names