def delete_volume(self, volume, ignore_missing=True):
        self._delete(_volume.Volume, volume, ignore_missing=ignore_missing)
Verify base formset doesn't modify database
dataset/ETHPy150Open openstack/python-openstacksdk/openstack/block_store/v2/_proxy.py/Proxy.delete_volume--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.3/tests/regressiontests/model_formsets_regress/tests.py/FormfieldShouldDeleteFormTests.test_no_delete