public void Unequip(OnItemUnequipEventData e)
    {
        EquipmentCollection equipment = e.Equipper
                                        .GetComponentInChildren <EquipmentCollection>();

        if (equipment.IsItemInSlot(e.EquipmentSlot))
        {
            equipment.RemoveItemInSlot(e.EquipmentSlot);
        }
    }