code: def test_marking_decorated_functions_as_setup_task(self, dag_maker):
      @setup
      @task
      def mytask():
          print("I am a setup task")
  
      with dag_maker() as dag:
          mytask()
  
      assert len(dag.task_group.children) == 1
      setup_task = dag.task_group.children["mytask"]
      assert setup_task.is_setup
  
imports: from __future__ import annotations
  import pytest
  from airflow.decorators import setup, task, task_group, teardown
  from airflow.decorators.setup_teardown import context_wrapper
  from airflow.exceptions import AirflowException
  from airflow.operators.bash import BashOperator
label_desc: Use image node_id 3 for calling the TestSetupTearDownTask obj's underlying member method code with example usage: obj.test_marking_decorated_functions_as_setup_task(dag_maker) without return types