CLASS cjw net/minecraft/world/gen/surfacebuilder/NetherSurfaceBuilder
	FIELD S GLOWSTONE Lbvl;
	FIELD a seed J
	FIELD b noise Lckg;
	FIELD c CAVE_AIR Lbvl;
	FIELD d NETHERRACK Lbvl;
	FIELD e GRAVEL Lbvl;