public class RosetteBiomes {
        public static final BiomeAshDesert ashDesert = new BiomeAshDesert();

         @SubscribeEvent
            public static void registerBiomes(RegistryEvent.Register<Biome> event) {
                IForgeRegistry<Biome> registry = event.getRegistry();
                registry.register(ashDesert);
                BiomeManager.addBiome(BiomeType.DESERT, new BiomeEntry(ashDesert, 10));
                BiomeManager.addSpawnBiome(ashDesert);
                BiomeProvider.allowedBiomes.add(ashDesert);
                BiomeDictionary.addTypes(ashDesert, BiomeDictionary.Type.HOT);
            }

}