docs: def main(argv):
      """Entry point for running one selfplay game."""
      del argv  # Unused
      flags.mark_flag_as_required('load_file')
  
      run_game(
          load_file=FLAGS.load_file,
          selfplay_dir=FLAGS.selfplay_dir,
          holdout_dir=FLAGS.holdout_dir,
          holdout_pct=FLAGS.holdout_pct,
          sgf_dir=FLAGS.sgf_dir)