code: def _add_line(sizes: list[int], separator: str) -> str:
      return "+" + "".join(
          (separator * (size + 1)) + "+" for size in sizes
      )
  
imports: from __future__ import annotations
  import glob
  import inspect
  import pickle
  import re
  import sys
  from importlib import import_module
  from os import path
  from typing import IO, TYPE_CHECKING, Any, TextIO
  import sphinx
  from sphinx.builders import Builder
  from sphinx.locale import __
  from sphinx.util import logging
  from sphinx.util.console import red
  from sphinx.util.inspect import safe_getattr
label_desc: Use image node_id 4 for calling a global function with example usage: _add_line(sizes, separator) and returns: unknown