docs: public Menu match(String userId) {
          String url = WxEndpoint.get("url.menu.match");
          String request = String.format("{\"user_id\":\"%s\"}", userId);
          String response = wxClient.post(url, request);
          logger.debug("matched menu: {}", response);
          MenuWrapper menuWrapper = JsonMapper.nonEmptyMapper().fromJson(response, MenuWrapper.class);
          return menuWrapper.getMenu();
      }