def append(self, value):
        list.append(self, value)
        self.changed()
Check the ETag header is updated upon miss.
dataset/ETHPy150Open openstack/sahara/sahara/db/sqlalchemy/types.py/MutableList.append--crossover with--dataset/ETHPy150Open skibblenybbles/django-daydreamer/daydreamer/tests/views/behaviors/http/tests.py/ConditionTestCase.test_etag_miss