Throw when AddonRegistry().getServices(Class) finds nothing ----------------------------------------------------------- Key: FORGE-2589 URL: https://issues.jboss.org/browse/FORGE-2589 Project: Forge Issue Type: Feature Request Components: Addon Manager, Furnace (Container) Affects Versions: 2.20.1.Final Reporter: Ondrej Zizka This is just a suggestion to strenghten the contract of getServices(Class). Often, the code looks like this: {code} furnace.getAddonRegistry().getServices(GraphApiCompositeClassLoaderProvider.class).get(); {code} And all works until something goes wrong with the addons setup. In that case, getServices() returns null and the user sees a NullPointerException. I suggest that there could be 2 methods, getServices() which would throw an informative exception if no such services are found, and findServices() which would return null, as the current getServices() does.