@property
    def dummy_access_token(self):
        raise NotImplementedError("Subclasses must implement this function.")
Returns the latest item's updated or the current time if there are no items.
dataset/ETHPy150Open idan/oauthlib/oauthlib/oauth1/rfc5849/request_validator.py/RequestValidator.dummy_access_token--crossover with--dataset/ETHPy150Open llazzaro/django-scheduler/schedule/feeds/atom.py/AtomFeed.latest_updated