code: def ids(values):
      return "-".join(values) or "dvc"
  
file_path: dvc/tests/unit/command/test_help.py
imports: import logging
  import re
  from argparse import SUPPRESS, ArgumentParser
  from itertools import takewhile
  from typing import Tuple
  import pytest
  import shtab
  from dvc.cli import main
  from dvc.cli.parser import get_main_parser
label_desc: Use image node_id 2 for calling a global function with example usage: ids(values) and returns: unknown