@Override
	public JComponent getHoverComponent(Program program, ProgramLocation programLocation,
			FieldLocation fieldLocation, Field field) {

		Symbol symbol = getLabelSymbol(programLocation);
		if (symbol == null) {
			return null;
		}
		return createTooltipComponent(getToolTipText(symbol));
	}
A hover service to show the full namespace path of a symbol along with its symbol type and
source type.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/codebrowser/hover/LabelListingHover.java