CLASS net/minecraft/class_3978 net/minecraft/world/IdCountsState
	FIELD field_17662 idCounts Lit/unimi/dsi/fastutil/objects/Object2IntMap;
	FIELD field_31830 IDCOUNTS_KEY Ljava/lang/String;
	METHOD method_17920 getNextMapId ()Lnet/minecraft/class_9209;
	METHOD method_32360 fromNbt (Lnet/minecraft/class_2487;Lnet/minecraft/class_7225$class_7874;)Lnet/minecraft/class_3978;
		ARG 0 nbt
		ARG 1 registryLookup
	METHOD method_52610 getPersistentStateType ()Lnet/minecraft/class_18$class_8645;