@Override
	public String getToolTipText(MouseEvent event) {
		Point point = event.getPoint();
		GTreeNode node = getNodeForLocation(point.x, point.y);
		String customTip = getToolTipTextForNode(node);
		if (customTip != null) {
			return customTip;
		}

		return super.getToolTipText(event);
	}
Signals to this tree that it should configure itself for use inside of a widget that allows
the user to choose a data type.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/datamgr/tree/DataTypeArchiveGTree.java