CLASS qn net/minecraft/migration/TagUpgraderEntityStackList
FIELD a inventoryKeys [Ljava/lang/String;
METHOD <init> (Ljava/lang/Class;[Ljava/lang/String;)V
ARG 0 objClass
ARG 1 invKeys
METHOD b upgradeTagInternal (Lpe;Ldt;I)Ldt;
ARG 0 handler
ARG 1 tag
ARG 2 version