code: def arg(*args, **kwargs):
      def decorate(func):
          func.__cmd_name__ = kwargs.pop(
              'cmd_name', getattr(func, '__cmd_name__', func.__name__))
          func.__cls__ = utils.check_class()
          if not hasattr(func, '__arguments__'):
              func.__arguments__ = utils.get_functarguments(func)
          if len(args) or len(kwargs):
              arg_name = kwargs.get(
                  'dest', args[-1].lstrip('-').replace('-', '_'))
              try:
                  idx = func.__named__.index(arg_name)
                  del func.__named__[idx]
                  del func.__arguments__[idx]
              except ValueError:
                  pass
              func.__arguments__.append((args, kwargs,))
          if func.__cls__ is None and isinstance(func, types.FunctionType):
              ap_ = ArgParseInator(skip_init=True)
              if func.__cmd_name__ not in ap_.commands:
                  ap_.commands[func.__cmd_name__] = func
          return func
      return decorate