code: def after_test(self):
      self._drop_testing_engines("function")
  
imports: from __future__ import annotations
  import collections
  import re
  import typing
  from typing import Any
  from typing import Dict
  from typing import Optional
  import warnings
  import weakref
  from .None import config
  from .util import decorator
  from .util import gc_collect
  from ..None import event
  from ..None import pool
  from ..util import await_
  from ..util.typing import Literal
label_desc: Use image node_id 12 for calling the ConnectionKiller obj's underlying member method code with example usage: obj.after_test() without return types