CLASS btt net/minecraft/world/chunk/storage/RegionFileCache
	FIELD d cachedRegionFiles Lit/unimi/dsi/fastutil/longs/Long2ObjectLinkedOpenHashMap;
	METHOD a getRegionFile (Lbcr;)Lbts;
		ARG 1 pos
	METHOD a writeChunkTag (Lbcr;Lhx;)V
		ARG 1 pos
		ARG 2 tag
	METHOD d readChunkTag (Lbcr;)Lhx;
		ARG 1 pos
	METHOD g getRegionDir ()Ljava/io/File;