code: def _should_get_another_batch(self, content):
      
      if ('max-keys' in self._options and
          self._options['max-keys'] <= common._MAX_GET_BUCKET_RESULT):
        return False
  
      elements = self._find_elements(
          content, set([common._T_IS_TRUNCATED,
                        common._T_NEXT_MARKER]))
      if elements.get(common._T_IS_TRUNCATED, 'false').lower() != 'true':
        return False
  
      next_marker = elements.get(common._T_NEXT_MARKER)
      if next_marker is None:
        self._options.pop('marker', None)
        return False
      self._options['marker'] = next_marker
      return True
docs: Whether to issue another GET bucket call.
  
      Args:
        content: response XML.
  
      Returns:
        True if should, also update self._options for the next request.
        False otherwise.