code: def describe_option(name: Optional[str] = None):
      """Prints the description of an option.
  
      If `name` is unspecified, prints the description of all available options.
  
      Parameters
      ----------
      name : Optional[str]
          The name of the option.
      """
      names = _OPTIONS.keys() if name is None else [name]
      for name in names:
          print(_build_option_description(name, _OPTIONS[name]))
  
imports: import os
  import textwrap
  from collections.abc import Container
  from contextlib import ContextDecorator
  from dataclasses import dataclass
  from typing import Any, Callable, Dict, Optional
label_desc: Use image node_id 7 for calling a global function with example usage: describe_option(name) without return types