private URL getURL(FavoritesItem item, HelpSet helpSet, Map combinedMap) {
			String target = item.getTarget();
			if (target == null) {
				// use the URL of the item
				return item.getURL();
			}

			ID newID = null;
			try {
				newID = ID.create(target, helpSet);
			}
			catch (BadIDException e) {
				Msg.debug(this, "Invalid help ID; Mabye bad favorite bookmark?: " + target);
				return null;
			}

			try {
				return combinedMap.getURLFromID(newID);
			}
			catch (MalformedURLException e) {
				//shouldn't happen
				Msg.error(this, "Unexpected Exception", e);
			}
			return null;
		}
This class allows us to change the renderer of the favorites tree.
Ghidra/Framework/Help/src/main/java/help/CustomFavoritesView.java