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_failure_fail_dagrun": False,
                "executor_config": {
                    "__type": "dict",
                    "__var": {
                        "pod_override": {
                            "__type": "k8s.V1Pod",
                            "__var": PodGenerator.serialize_pod(executor_config_pod),
                        }
                    },
                },
                "doc_md": "### Task Tutorial Documentation",
            },
            {
                "task_id": "custom_task",
                "retries": 1,
                "retry_delay": 300.0,
                "max_retry_delay": 600.0,
                "sla": 100.0,
                "downstream_task_ids": [],
                "_is_empty": False,
                "_operator_extra_links": [{"tests.test_utils.mock_operators.CustomOpLink": {}}],
                "ui_color": "#fff",
                "ui_fgcolor": "#000",
                "template_ext": [],
                "template_fields": ["bash_command"],
                "template_fields_renderers": {},
                "_task_type": "CustomOperator",
                "_operator_name": "@custom",
                "_task_module": "tests.test_utils.mock_operators",
                "pool": "default_pool",