def test_removeTrigger(self):
        handle = self.event.addTrigger('before', self.trigger, self.arg)
        self.event.removeTrigger(handle)
        self.assertEqual(self.event.before, [])
L{_ThreePhaseEvent.removeTrigger} should accept an opaque object
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/test/test_internet.py/ThreePhaseEventTests.test_removeTrigger