class_docstr: Converts a (possibly) bound method into a partial function to
  support class methods as arguments to handlers.
code: def __get__(
      self,
      instance: Optional[object],
      owner: Optional[Type[object]] = None,
  ) -> object:
      if instance is None:
          return self
      return partial(self.func, instance)
  
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 2 for calling the _bound_partial obj's underlying member method code with example usage: obj.__get__(instance, owner) and returns: partial, self