code: def main(dialogpath=None):
      
      if dialogpath is None:
          args = parse_args()
          dialogpath = os.path.abspath(os.path.expanduser(args.dialogpath))
      else:
          dialogpath = os.path.abspath(os.path.expanduser(args.dialogpath))
      return clean_csvs(dialogpath=dialogpath)
docs: Parse the state transition graph for a set of dialog-definition tables to find an fix deadends