Set a restore point (copy the object), then call the method.
        :return: obj.do_method(*args)

def do(self):
        """
        Set a restore point (copy the object), then call the method.
        :return: obj.do_method(*args)
        """
        self.restore_point = self.obj.copy()
        return self.do_method(self.obj, *self.args)