code: def get_description(
      default: Optional[str] = None, env: Optional[Env] = None
  ) -> Optional[str]:
      if env is None:
          env = os.environ
  
      return env.get(DESCRIPTION, default)
  
imports: import json
  import os
  import sys
  from distutils.util import strtobool
  from pathlib import Path
  from typing import List, MutableMapping, Optional, Union
  import appdirs
label_desc: Use image node_id 20 for calling a global function with example usage: get_description(default, env) and returns: env