class_docstr: Inject code or modify the docstring of a class, method, or function.
code: def __init__(self, extra):
      self.kind = self.__class__.__name__
      self.extra = extra
      self.msg = f"NOTE: {{}}() is a {self.kind} {{}}. {self.extra}."
  
imports: import inspect
  import os
  import os.path
  import re
  import sys
  import webbrowser
  from copy import deepcopy
  from decorator import FunctionMaker
  from ..defaults import HEAD_SIZE_DEFAULT
  from ._bunch import BunchConst
label_desc: Use image node_id 1 to create a new _decorator object  with example: obj = _decorator(extra)