private Map<Class<?>, List<FieldMouseHandler>> getFieldMouseHandlers() {
		if (fieldMouseHandlers == null) {
			fieldMouseHandlers = initializeFieldMouseHandlers();
		}

		return fieldMouseHandlers;
	}
Helper class to navigate to an address when user double clicks in a 
Field.  This class will find {@link FieldMouseHandlerExtension}s by using the {@link ClassSearcher}.
Ghidra/Features/Base/src/main/java/ghidra/app/util/viewer/util/FieldNavigator.java