I am learning how to create my first mod. I have followed the first page of the following tutorial up to the Building and Testing Your Mod section: https://docs.minecraftforge.net/en/1.20.x/gettingstarted/ The Config.java class that is bundled in the MDK download uses the ResourceLocation.java class in two locations: private static boolean validateItemName(final Object obj) { return obj instanceof final String itemName && ForgeRegistries.ITEMS.containsKey(new Reso