private com.google.protobuf.SingleFieldBuilder<
          JOutPiqi.timer, JOutPiqi.timer.Builder, JOutPiqi.timerOrBuilder> 
          getStartTimerFieldBuilder() {
        if (startTimerBuilder_ == null) {
          startTimerBuilder_ = new com.google.protobuf.SingleFieldBuilder<
              JOutPiqi.timer, JOutPiqi.timer.Builder, JOutPiqi.timerOrBuilder>(
                  startTimer_,
                  getParentForChildren(),
                  isClean());
          startTimer_ = null;
        }
        return startTimerBuilder_;
      }