code: def value(self) -> str:
      raise NotImplementedError
  
imports: from __future__ import annotations
  import functools
  import logging
  import os
  import os.path
  from typing import IO, TYPE_CHECKING, Any
  import mergedeep
  import yaml
  import yaml.constructor
  import yaml_env_tag
  from mkdocs import exceptions
label_desc: Use image node_id 2 for calling the _DirPlaceholder obj's underlying member method code with example usage: obj.value() without return types