docs: def main(args=None):
      """Call the CLI interface and wait for the result."""
      retcode = 0
      try:
          ci = CliInterface()
          args = ci.parser.parse_args()
          result = args.func(args)
          if result is not None:
              print(result)
          retcode = 0
      except Exception:
          retcode = 1
          traceback.print_exc()
      sys.exit(retcode)