private void addHoverServices(ListingPanel panel) {
		ListingHoverService[] hoverServices = tool.getServices(ListingHoverService.class);
		for (ListingHoverService hoverService : hoverServices) {
			panel.addHoverService(hoverService);
		}
	}
Extension point to specify titles when dual panels are active

@param panelProgram the program assigned to the panel whose title is requested
@return the title of the panel for the given program
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/codebrowser/CodeViewerProvider.java