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
"""Performs dry run for the operator - just render template fields."""
        self.log.info("Dry run")
        for field in self.template_fields:
            try:
                content = getattr(self, field)
            except AttributeError:
                raise AttributeError(
                    f"{field!r} is configured as a template field "
                    f"but {self.task_type} does not have this attribute."
                )
            if content and isinstance(content, str):
                self.log.info("Rendering template for %s", field)
                self.log.info(content)
    def get_direct_relatives(self, upstream: bool = False) -> Iterable[DAGNode]: