CLASS tj net/minecraft/migration/TagUpgraderStackDataBlockEntity
	FIELD a LOGGER Lorg/apache/logging/log4j/Logger;
	FIELD b OLD_REMAPS Ljava/util/Map;
	FIELD c NEW_REMAPS Ljava/util/Map;
	METHOD a remapId (ILjava/lang/String;)Ljava/lang/String;
		ARG 0 srcVersion
		ARG 1 srcId
	METHOD a upgradeTag (Lrv;Lfy;I)Lfy;
		ARG 0 handler
		ARG 1 tag
		ARG 2 version