def revert(self, *args, **kwargs):
        result = kwargs.get('result')
        # If this somehow fails, timeout, or other don't send back a
        # valid result...
        if isinstance(result, six.integer_types):
            return result - 1
dataset/ETHPy150Open openstack/taskflow/taskflow/tests/utils.py/GiveBackRevert.revert/operator `+` -> `-`