code: void onPushTokenResult(int rstCode, TokenResult result) {
          HMSAgentLog.i("getToken:callback=" + StrUtils.objDesc(handler) +" retCode=" + rstCode);
          if (handler != null) {
              new Handler(Looper.getMainLooper()).post(new CallbackCodeRunnable(handler, rstCode));
              handler = null;
          }
          retryTimes = MAX_RETRY_TIMES;
      }
docs: 获取pushtoken接口调用回调
  pushtoken通过广播下发，要监听的广播，请参见HMS-SDK开发准备中PushReceiver的注册
  @param rstCode 结果码
  @param result 调用获取pushtoken接口的结果