CLASS bsu net/minecraft/world/chunk/ChunkProvider METHOD a onLightUpdate (Lbdd;III)V ARG 1 type ARG 2 chunkX ARG 3 sectionY ARG 4 chunkZ METHOD b getChunk (II)Lbcf; ARG 1 chunkX ARG 2 chunkZ METHOD j getWorld ()Lbcf;