code: def limit(self, limit_value, key_func=None, per_method=False,
                methods=None, error_message=None, exempt_when=None):
          
          return self.__limit_decorator(limit_value, key_func, per_method=per_method,
                                        methods=methods, error_message=error_message,
                                        exempt_when=exempt_when)
docs: decorator to be used for rate limiting individual routes.
  
          :param limit_value: rate limit string or a callable that returns a string.
           :ref:`ratelimit-string` for more details.
          :param function key_func: function/lambda to extract the unique identifier for
           the rate limit. defaults to remote address of the request.
          :param bool per_method: whether the limit is sub categorized into the http
           method of the request.
          :param list methods: if specified, only the methods in this list will be rate
           limited (default: None).
          :param error_message: string (or callable that returns one) to override the
           error message used in the response.
          :return: