code: public void updateLastCheck() {
          this.lastCheckTs = System.currentTimeMillis();
          if (this.config().autoLogin()) {
              String file = this.config().assetsDir() + "/login.json";
              WeChatUtils.writeJson(file, HotReload.build(this.session()));
              if (log.isDebugEnabled()) {
                  log.debug("写入本地登录JSON");
              }
          }
      }
docs: 更新最后一次正常心跳时间