CLASS cfv net/minecraft/world/chunk/light/BlockLightStorage
	CLASS cfv$a Data
		METHOD <init> (Lit/unimi/dsi/fastutil/longs/Long2ObjectOpenHashMap;)V
			ARG 1 map
		METHOD a copy ()Lcfv$a;
	METHOD <init> (Lbtb;)V
		ARG 1 chunkProvider
