code: def limit(self, max_):
          
  
          if isinstance(self, type):
              result = self()
          else:
              result = copy.deepcopy(self)
          result.max_ = max_
          return result
docs: Limit the result set to a given number of items.
  
          :param max_: Maximum number of items to return.
          :type max_: :class:`int` or :data:`None`
          :rtype: :class:`ResultSetMetadata`
          :return: A new request set up to request at most `max_` items.
  
          This method can be called on the class and on objects. When called on
          objects, it returns a copy of the object with :attr:`max_` set
          accordingly. When called on the class, it creates a fresh object with
          :attr:`max_` set accordingly.