def test_duration_attribute_is_working_properly(self):
        d =  DurationMixin(duration=10)
        d.duration = 15
        self.assertEqual(15, d.duration)
To list all visible permissions, run a **GET** query against a list.
dataset/ETHPy150Open eoyilmaz/anima/tests/previs/test_duration_mixin.py/DurationAttrMixinTestCase.test_duration_attribute_is_working_properly--crossover with--dataset/ETHPy150Open opennode/nodeconductor/nodeconductor/structure/views.py/ProjectGroupPermissionViewSet.list