CLASS byb net/minecraft/world/gen/feature/BirchTreeFeature
	FIELD a LOG Lbtw;
	FIELD aR LEAVES Lbtw;
	FIELD aS alwaysTall Z
	METHOD <init> (Ljava/util/function/Function;ZZ)V
		ARG 1 configFactory
		ARG 2 emitNeighborBlockUpdates
		ARG 3 alwaysTall