def move_watch(self, from_literal, to_literal):
        if self._watch1 == from_literal:
            self._watch1 = to_literal
        else:
            self._watch2 = to_literal
Delete user1 and user2
dataset/ETHPy150Open enthought/depsolver/depsolver/solver/rules_watch_graph.py/RuleWatchNode.move_watch--crossover with--dataset/ETHPy150Open lingthio/Flask-User/flask_user/tests/test_invalid_forms.py/test_cleanup