CLASS sg 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;
	METHOD a upgradeTag (Lqu;Lfc;I)Lfc;