GTCEuStartupEvents.registry('gtceu:world_gen_layer', event => { GTWorldGenLayers.STONE.levels = [new ResourceLocation("minecraft", "overworld"), new ResourceLocation("allthemodium", "mining")]; GTWorldGenLayers.DEEPSLATE.levels = [new ResourceLocation("minecraft", "overworld"), new ResourceLocation("allthemodium", "mining")]; GTWorldGenLayers.NETHERRACK.levels = [new ResourceLocation("minecraft", "the_nether"), new ResourceLocation("allthemodium", "mining")]; GTWorldGenLayers.ENDSTONE.levels = [new ResourceLocation("minecraft", "the_end"), new ResourceLocation("allthemodium", "mining")]; })