@Override
	public String getToolTipText(MouseEvent event) {
		String text = super.getToolTipText(event);
		if (text != null) {
			return text;
		}
		return tree.getDefaultToolTipText(event);
	}
Used to run simple GTree tasks that can be expressed as a {@link MonitoredRunnable} (or a
lambda taking a {@link TaskMonitor}).

@param runnableTask {@link TaskMonitor} to watch and update with progress.
Ghidra/Framework/Docking/src/main/java/docking/widgets/tree/GTree.java