docstr: SampleError.__special_doc__.DOCSTRING
code: def __special_doc__(self):
      """SampleError.__special_doc__.DOCSTRING"""
      pass
  
imports: import functools
  from collections import namedtuple
  from unittest import mock
  import pytest
  from sphinx.application import Sphinx
  from sphinx.ext.napoleon import Config, _process_docstring, _skip_member, setup
label_desc: Use image node_id 3 for calling the SampleError obj's underlying member method code with example usage: obj.__special_doc__() without return types