def removeTrigger_BEFORE(self, handle):
        phase, callable, args, kwargs = handle
        if phase != 'before':
            return self.removeTrigger_BASE(handle)
        if (callable, args, kwargs) in self.finishedBefore:
            warnings.warn(
                "Removing already-fired system event triggers will raise an "
                "exception in a future version of Twisted.",
                category=DeprecationWarning,
                stacklevel=3)
        else:
            self.removeTrigger_BASE(handle)
Test 'update' command's ability to get a file from a URL
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/internet/base.py/_ThreePhaseEvent.removeTrigger_BEFORE--crossover with--dataset/ETHPy150Open rackerlabs/openstack-guest-agents-unix/tests/test_update_command.py/TestUpdateCommand.test_2_invalid_md5