AetherDataGenerator

public class AetherDataGenerator<T> {
    public DataProvider create(DataGenerator generator, ExistingFileHelper helper, DeferredRegister<T> registry, ResourceKey<Registry<T>> registryKey) {
        RegistryAccess registryAccess = RegistryAccess.builtinCopy();
        RegistryOps<JsonElement> registryOps = RegistryOps.create(JsonOps.INSTANCE, registryAccess);
        Map<ResourceLocation, T> map = new HashMap<>();
        for (RegistryObject<T> object : registry.getEntries()) {
            map.put(object.getId(), object.get());
        }
        return JsonCodecProvider.forDatapackRegistry(generator, helper, Aether.MODID, registryOps, registryKey, map);
    }
}