Ensure that this works:

```python
@setup
def mytask():
    print("I am a setup task")

with dag_maker() as dag:
    mytask.override(task_id='newtask')

assert len(dag.task_group.children) == 1
setup_task = dag.task_group.children["newtask"]
assert setup_task._is_setup
```
and teardown also works
"on_retry_callback": None,
            "on_success_callback": None,
            "outlets": [],
            "owner": "airflow",
            "params": {},
            "pool": "default_pool",
            "pool_slots": 1,
            "priority_weight": 1,
            "queue": "default",
            "resources": None,
            "retries": 0,
            "retry_delay": timedelta(0, 300),
            "retry_exponential_backoff": False,
            "run_as_user": None,
            "sla": None,
            "task_id": "10",
            "trigger_rule": "all_success",
            "wait_for_downstream": False,
            "wait_for_past_depends_before_skipping": False,
            "weight_rule": "downstream",
        }, """
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
     ACTION NEEDED! PLEASE READ THIS CAREFULLY AND CORRECT TESTS CAREFULLY
 Some fields were added to the BaseOperator! Please add them to the list above and make sure that
 you add support for DAG serialization - you should add the field to
 `airflow/serialization/schema.json` - they should have correct type defined there.
 Note that we do not support versioning yet so you should only add optional fields to BaseOperator.
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
                         """
    def test_operator_deserialize_old_names(self):