docs: public List<Integer> getUserTags(String openId) {
          String url = WxEndpoint.get("url.tag.user.gettag");
          Map<String, Object> map = new HashMap<>();
          map.put("openid", openId);
          String response = wxClient.post(url, JsonMapper.nonEmptyMapper().toJson(map));
          TagIdsWrapper tagIdsWrapper = JsonMapper.defaultMapper().fromJson(response, TagIdsWrapper.class);
          return tagIdsWrapper.getList();
      }