docs: def handle_args():
      """
      Default values are defined here.
      """
      default_database_name = dbconfig.testdb_corpus_url.database
      parser = argparse.ArgumentParser(
          prog=os.path.basename(__file__),
          formatter_class=argparse.ArgumentDefaultsHelpFormatter)
  
      parser.add_argument('dbname',
                          nargs='?',
                          default=str(default_database_name),
                          help='Database name',
                          )
      return parser.parse_args()