CLASS net/minecraft/class_3531 net/minecraft/world/gen/surfacebuilder/SurfaceConfig
	METHOD method_15330 getUnderwaterMaterial ()Lnet/minecraft/class_2680;
	METHOD method_15336 getUnderMaterial ()Lnet/minecraft/class_2680;
	METHOD method_15337 getTopMaterial ()Lnet/minecraft/class_2680;