private com.google.protobuf.SingleFieldBuilder<
          JInPiqi.handle_timer, JInPiqi.handle_timer.Builder, JInPiqi.handle_timerOrBuilder> 
          getHandleTimerFieldBuilder() {
        if (handleTimerBuilder_ == null) {
          handleTimerBuilder_ = new com.google.protobuf.SingleFieldBuilder<
              JInPiqi.handle_timer, JInPiqi.handle_timer.Builder, JInPiqi.handle_timerOrBuilder>(
                  handleTimer_,
                  getParentForChildren(),
                  isClean());
          handleTimer_ = null;
        }
        return handleTimerBuilder_;
      }