code: def __call__(self, fn: Callable[_P, _T]) -> Callable[_P, _T]:
      return functools.wraps(fn)(super().__call__(fn))
  
file_path: pyro/pyro/poutine/reentrant_messenger.py
imports: import functools
  from types import TracebackType
  from typing import Callable, Optional, Type, TypeVar
  from typing_extensions import ParamSpec, Self
  from pyro.poutine.messenger import Messenger
label_desc: Use image node_id 2 for calling the ReentrantMessenger obj's underlying member method code with example usage: obj.__call__(fn) and returns: functools