CLASS cjy net/minecraft/world/gen/surfacebuilder/NetherSurfaceBuilder
	FIELD S GLOWSTONE Lbvn;
	FIELD a seed J
	FIELD b noise Lcki;
	FIELD c CAVE_AIR Lbvn;
	FIELD d NETHERRACK Lbvn;
	FIELD e GRAVEL Lbvn;
