def set_status(self, status_code, reason=None):
        self._status_code = status_code
        if reason is not None:
            self._reason = tornado.escape.native_str(reason)
        else:
            try:
                self._reason = tornado.httputil.responses[status_code]
            except KeyError:
                self._reason = tornado.escape.native_str("Server Not Found")
Matches odd elements, zero-indexed::
dataset/ETHPy150Open owtf/owtf/framework/http/proxy/proxy.py/ProxyHandler.set_status--crossover with--dataset/ETHPy150Open gawel/pyquery/pyquery/cssselectpatch.py/JQueryTranslator.xpath_checked_pseudo