CLASS bxt net/minecraft/world/level/storage/AlphaChunkIo CLASS bxt$a AlphaChunk FIELD a lastUpdate J FIELD b terrainPopulated Z FIELD c heightMap [B FIELD d blockLight Lbxj; FIELD e skyLight Lbxj; FIELD f data Lbxj; FIELD g blocks [B FIELD h entities Lii; FIELD i blockEntities Lii; FIELD j blockTicks Lii; FIELD k x I FIELD l z I METHOD (II)V ARG 1 x ARG 2 z METHOD a convertAlphaChunk (Lbxt$a;Lib;Lbic;)V ARG 0 alphaChunk ARG 1 tag ARG 2 biomeSource METHOD a readAlphaChunk (Lib;)Lbxt$a; ARG 0 tag