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
from airflow.utils.setup_teardown import SetupTeardownContext
        with SetupTeardownContext.setup():
            return cls(*args, **kwargs)
    @classmethod
    def as_teardown(cls, *args, **kwargs):
        from airflow.utils.setup_teardown import SetupTeardownContext
        on_failure_fail_dagrun = kwargs.pop("on_failure_fail_dagrun", False)
        with SetupTeardownContext.teardown(on_failure_fail_dagrun=on_failure_fail_dagrun):
            return cls(*args, **kwargs)
    def __eq__(self, other):
        if type(self) is type(other):
            
            
            return all(getattr(self, c, None) == getattr(other, c, None) for c in self._comps)
        return False
    def __ne__(self, other):