def METHOD_NAME(self, response, key, number):
    self.checks.append(key == "value")
    self.checks.append(number == 123)
    self.crawler.stats.inc_value("boolean_checks", 2)
    yield response.follow(
        self.mockserver.url("/two"),
        self.parse_second,
        cb_kwargs={"new_key": "new_value"},
    )