private Map<ResourceFile, Set<URL>> findHelpSetsByModule() {
		Set<URL> allHelpSets = ResourceManager.getResources("help", "hs");
		Collection<ResourceFile> moduleRoots = Application.getModuleRootDirectories();
		Map<ResourceFile, Set<URL>> helpSetsByModule = mapHelpToModule(moduleRoots, allHelpSets);
		return helpSetsByModule;
	}
The hardcoded value to use for all HelpSet 'home id' values.  Subclasses may change this 
value by overriding {@link #getHomeId()}.
Ghidra/Features/Base/src/main/java/ghidra/base/help/GhidraHelpService.java