code: def load_page(self, payload):
          
          if 'meta' in payload and 'key' in payload['meta']:
              return payload[payload['meta']['key']]
          else:
              keys = set(payload.keys())
              key = keys - self.META_KEYS
              if len(key) == 1:
                  return payload[key.pop()]
  
          raise TwilioException('Page Records can not be deserialized')
docs: Parses the collection of records out of a list payload.
  
          :param dict payload: The JSON-loaded content.
          :return list: The list of records.