private synchronized void update() {
		if (message != lastMessage) {
			messageLabel.setText(message == null ? "" : message);
			lastMessage = message;
		}

		if (max != lastMax) {
			setMaxValueInProgressBar(max);
			lastMax = max;
		}

		if (progress != lastProgress) {
			setValueInProgressBar(progress);
			lastProgress = progress;
		}
	}
True (the default) signals to paint the progress information inside of the progress bar.

@param showProgressValue true to paint the progress value; false to not
Ghidra/Framework/Project/src/main/java/ghidra/framework/task/gui/GProgressBar.java