code: def main():
      parser = ArgumentParser()
      parser.add_argument(
          "--settings-file",
          default=Path(jupyter_core_paths.jupyter_config_dir())
          / "labconfig"
          / "default_setting_overrides.json",
      )
      subparsers = parser.add_subparsers(required=True)
      for subcommand in SUBCOMMANDS:
          subparser = subparsers.add_parser(
              subcommand.name, help=subcommand.help
          )
          subparser.set_defaults(subcommand=subcommand)
          subcommand.fill_parser(subparser)
      args = parser.parse_args(sys.argv[1:] or ["--help"])
      return args.subcommand.main(args)
  
imports: import sys
  from argparse import ArgumentParser
  from pathlib import Path
  import jupyter_core.paths
  from .labconfig import LabConfig
label_desc: Use image node_id 1 for calling a global function with example usage: main() and returns: args