def _perspectives_default(self):
        return [ExplorerPerspective]
When the same field is involved in multiple unique_together
dataset/ETHPy150Open enthought/mayavi/examples/mayavi/explorer/explorer3d.py/ExplorerPlugin._perspectives_default--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/tests/regressiontests/model_forms_regress/tests.py/UniqueTogetherTests.test_multiple_field_unique_together