code: def fetch_page(cls, index, max_=None):
          
  
          result = cls()
          result.index = index
          result.max_ = max_
          return result
docs: Return a query set which requests a specific page.
  
          :param index: Index of the first element of the page to fetch.
          :type index: :class:`int`
          :param max_: Maximum number of elements to fetch
          :type max_: :class:`int` or :data:`None`
          :rtype: :class:`ResultSetMetadata`
          :return: A new request set up to request a page starting with the
                   element indexed by `index`.
  
          .. note::
  
             This way of retrieving items may be approximate. See :xep:`59` and
             the embedding protocol for which RSM is used for specifics.