def is_valid_for_snapshot(self):
        return self.is_setup() or self in set([CommandType.snapshot, CommandType.teardown])
Testing the Union aggregate of 3D models.
dataset/ETHPy150Open dropbox/changes/changes/models/command.py/CommandType.is_valid_for_snapshot--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/contrib/gis/tests/geo3d/tests.py/Geo3DTest.test03a_union