CLASS azv net/minecraft/world/gen/structure/StructurePiecesMineshaft
	CLASS azv$a MineshaftPieceCorridor
	CLASS azv$b MineshaftPieceCrossing
	CLASS azv$c MineshaftPiece
	CLASS azv$d MineshaftPieceRoom
	CLASS azv$e MineshaftPieceStairs
	METHOD a registerPieces ()V