@Override
	public URL getLocalProjectURL(String ref) {
		ProjectLocator projectLocator = parent.getProjectLocator();
		if (!projectLocator.isTransient()) {
			return GhidraURL.makeURL(projectLocator, getPathname(), ref);
		}
		return null;
	}
{@code LinkedGhidraFile} corresponds to a {@link DomainFile} contained within a
{@link LinkedGhidraFolder}.
Ghidra/Framework/Project/src/main/java/ghidra/framework/data/LinkedGhidraFile.java