def test_contains(self):
        prio_set_list = event._PrioritizedSetList()
        obj = object()

        prio_set_list.add(0, obj)
        assert obj in prio_set_list
def add_target_handle(self, layer):
        input_handle = layer.register_forward_hook(get_target_input)
        self.target_handle = input_handle