private HelpSet createHelpSet(URL url, GHelpClassLoader classLoader) throws HelpSetException {
		if (!urlToHelpSets.containsKey(url)) {
			GHelpSet hs = new GHelpSet(classLoader, url);
			hs.setHomeID(getHomeId());
			urlToHelpSets.put(url, hs);
			return hs;
		}
		return null;
	}
Create a new help set for the given url, if one does
not already exist.
@param classLoader the class loader
Ghidra/Framework/Docking/src/main/java/docking/help/HelpManager.java