code: def to_line(self) -> str:
      if self.description:
          line = f"- {self.description} <br>"
      elif self.ident:
          line = f"- {emphasize(self.ident)}"
          if self.ty:
              line += f" : {self.ty} <br>"
          else:
              line += " <br>"
      else:
          raise DocstringError(
              "RetVal must have either description or ident"
          )
      return line
  
imports: import argparse
  import logging
  import os
  import re
  import sys
  from collections import OrderedDict
  from dataclasses import dataclass
  from enum import Enum
  from multiprocessing import Pool, cpu_count
  from pathlib import Path
  from typing import List, Optional, Tuple
  import docspec
  from docspec import ApiObject, Class, Data, Function, Indirection, Module
  from docspec_python import format_arglist
  from pydoc_markdown import Processor, PydocMarkdown, Resolver
  from pydoc_markdown.contrib.loaders.python import PythonLoader
  from pydoc_markdown.contrib.renderers.markdown import MarkdownRenderer
label_desc: Use image node_id 2 for calling the RetVal obj's underlying member method code with example usage: obj.to_line() and returns: line