Solved [1.8 - 1.15.x] How to get the player who holds Itemstack (NMS)

The reason I am using nms is because I need to store values in custom items, so the custom items can have a level, the can be increased by using it.
I think it would be nice if I had an api for this plugin, and therefor I want to let people using the api be able to get the player holding the specific item.

Method can be called with PetsAPI#getPetHolder(<item in players hand>)

Code (Java):

@Override
    public Player getPetHolder(ItemStack pet) {

        return null;
    }

Notice the Itemstack have an nbttag

 

1.15 dont seem to have PersistenDataHolder

 

well

Code (Java):

myItem.getItemMeta().getPersistenDataHolder()

isnt available

 

But if it is why dont I have access to the methods from PersistenDataHolder

 

NMS is working fine for right, can anyone help me with my issue?

 

Trying not to do that

 

What if it is in a chest

 

Should I save the player, player's or player's uuid as value

 

I know thats not the name, I just hoped you would know what I meant, but I can see how that is very unclear to know. I found out I should need #getCustomContainer.

 

I switched over to PersistenDataContainer:

This is my code for now, dont know if it works yet.

Code (Java):

@Override
    public Player getPetHolder(ItemStack pet) {
        CustomItemTagContainer ctc = pet.getItemMeta().getCustomTagContainer();
        if(ctc.getCustomTag(plugin.wrapper.holderKey, ItemTagType.STRING) == null)
            return null;
     
        Player holder = Bukkit.getPlayer(ctc.getCustomTag(plugin.wrapper.holderKey, ItemTagType.STRING));
        return holder;
    }

Then I will create a custom event that checks if the pet is in a new inventory or something along the lines