code: def _check_args(args):
      if args.package_description and args.markdown:
          cli.error(
              "--package-description and --markdown cannot both be used"
          )
  
file_path: guildai/guild/commands/help_impl.py
imports: import click
  from guild import cli
  from guild import cmd_impl_support
  from guild import help
label_desc: Use image node_id 2 for calling a global function with example usage: _check_args(args) without return types