class_docstr: Converts a (possibly) bound method into a partial function to
  support class methods as arguments to handlers.
code: def __init__(self, func):
      self.func = func
  
imports: from contextlib import contextmanager
  from functools import partial
  from types import TracebackType
  from typing import Any, Callable, Iterator, List, Optional, Type, TypeVar
  from typing_extensions import ParamSpec, Self
  from pyro.poutine.runtime import _PYRO_STACK, Message
label_desc: Use image node_id 1 to create a new _bound_partial object from inherited base classes: partial with example: obj = _bound_partial(func)