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
"""Required by DAGNode."""
        return [self]
    @property
    def output(self) -> XComArg:
        """Returns reference to XCom pushed by current operator"""
        from airflow.models.xcom_arg import XComArg
        return XComArg(operator=self)
    @staticmethod
    def xcom_push(
        context: Any,
        key: str,
        value: Any,
        execution_date: datetime | None = None,
    ) -> None:
        """
        Make an XCom available for tasks to pull.
        :param context: Execution Context Dictionary
        :param key: A key for the XCom
        :param value: A value for the XCom. The value is pickled and stored
            in the database.
        :param execution_date: if provided, the XCom will not be visible until
            this date. This can be used, for example, to send a message to a
            task on a future date without it being immediately visible.
        """
        context["ti"].xcom_push(key=key, value=value, execution_date=execution_date)
    @staticmethod
    def xcom_pull(