def test_deregister(self):
        self.site.external_manager.register_processor(DummyCriticalFailingProc)
        self.assertRaises(ExternalFailure, self.site.build)
        self.site.external_manager.deregister_processor(DummyCriticalFailingProc)
        self.site.build()
Return a list of Node instances that defines the column.
dataset/ETHPy150Open koenbok/Cactus/cactus/tests/test_external.py/TestStaticExternals.test_deregister--crossover with--dataset/ETHPy150Open coleifer/peewee/peewee.py/Field.__ddl__