code: def _get_serializer(self, app: FlaskUnchained, name: str) -> URLSafeTimedSerializer:
          
          salt = app.config.get('SECURITY_%s_SALT' % name.upper())
          return URLSafeTimedSerializer(secret_key=app.config.SECRET_KEY, salt=salt)
docs: Get a URLSafeTimedSerializer for the given serialization context name.
  
          :param app: the :class:`FlaskUnchained` instance
          :param name: Serialization context. One of ``confirm``, ``login``,
            ``remember``, or ``reset``
          :return: URLSafeTimedSerializer