docs: public List<SessionLog> listSessionLogs(Date start, Date end, int index, int size) {
          String url = WxEndpoint.get("url.care.session.logs");
          Map<String, Object> request = new HashMap<>();
          request.put("starttime", start.getTime() / 1000);
          request.put("endtime", end.getTime() / 1000);
          request.put("pageindex", index);
          request.put("pagesize", size);
  
          String json = JsonMapper.nonEmptyMapper().toJson(request);
          logger.debug("get session logs: {}", json);
          String response = wxClient.post(url, json);
          SessionLogList sessionLogList = JsonMapper.defaultMapper().fromJson(response, SessionLogList.class);
          return sessionLogList.getLogs();
      }