public Builder setStartTimer(JOutPiqi.timer value) {
        if (startTimerBuilder_ == null) {
          if (value == null) {
            throw new NullPointerException();
          }
          startTimer_ = value;
          onChanged();
        } else {
          startTimerBuilder_.setMessage(value);
        }
        bitField0_ |= 0x00000002;
        return this;
      }