@property
  def ancestor(self):
    return self.__ancestor
Ensure events with the same slugs are prohibited.
dataset/ETHPy150Open GoogleCloudPlatform/datastore-ndb-python/ndb/model.py/Index.ancestor--crossover with--dataset/ETHPy150Open swcarpentry/amy/workshops/test/test_event.py/TestEventViews.test_unique_slug