Unified Item Tags
Class: UnifiedItemTags
Tags to expose additional item functionality.
Persistent Cooldowns
UnifiedItemTags.PERSISTENT_COOLDOWNS, or "#unified:persistent_cooldowns" allows you to extend the vanilla item cooldown functionality by ensuring that cooldowns do not reset when a player leaves / quits a world.
This makes it possible to use longer cooldown times when designing custom items, as the cooldown cannot be bypassed by the player.