CLASS cjv net/minecraft/world/gen/surfacebuilder/NetherSurfaceBuilder
	FIELD S GLOWSTONE Lbvk;
	FIELD a seed J
	FIELD b noise Lckf;
	FIELD c CAVE_AIR Lbvk;
	FIELD d NETHERRACK Lbvk;
	FIELD e GRAVEL Lbvk;
