code: def _next_page(self):
          
          if self._last_page_seen:
              raise StopIteration
          new, self._last_page_seen = self.conn.query_multiple(self.object_type, self._next_page_index,
                                                               self.url_params, self.query_params)
          self._next_page_index += 1
          if len(new) == 0:
              self._last_page_seen = True  # don't bother with next page if nothing was returned
          else:
              self._results += new
docs: Fetch the next page of the query.