CLASS btg net/minecraft/world/level/storage/AlphaChunkIo
	CLASS btg$a AlphaChunk
	METHOD a convertAlphaChunk (Lbtg$a;Lhr;Lbdt;)V
		ARG 0 alphaChunk
		ARG 1 tag
		ARG 2 biomeSource
	METHOD a readAlphaChunk (Lhr;)Lbtg$a;
		ARG 0 tag