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
return self._dag
    @property  
    def dag(self) -> DAG:  
        """Returns the Operator's DAG if set, otherwise raises an error"""
        if self._dag:
            return self._dag
        else:
            raise AirflowException(f"Operator {self} has not been assigned to a DAG yet")
    @dag.setter
    def dag(self, dag: DAG | None):
        """
        Operators can be assigned to one DAG, one time. Repeat assignments to
        that same DAG are ok.
        """
        from airflow.models.dag import DAG
        if dag is None:
            self._dag = None
            return
        if not isinstance(dag, DAG):
            raise TypeError(f"Expected DAG; received {dag.__class__.__name__}")
        elif self.has_dag() and self.dag is not dag:
            raise AirflowException(f"The DAG assigned to {self} can not be changed.")
        if self.__from_mapped:
            pass  
        elif self.task_id not in dag.task_dict:
            dag.add_task(self)
        elif self.task_id in dag.task_dict and dag.task_dict[self.task_id] is not self:
            dag.add_task(self)
        self._dag = dag
    def has_dag(self):