Example.kt

    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
    fun onInventoryPickupItem(event: InventoryPickupItemEvent) {
        val displayName = event.item.itemStack.itemMeta.displayName
        if (chestShopAddon.dataHandler.chestShops.values.any { it.item == event.item } ||
            displayName == "ChestShopIcon") {
            event.isCancelled = true
        }
    }