void SetupPurchaser()
{
_purchaser = Purchaser.Create();
_purchaser.SetStatusLabel(_statusTxt);
_purchaser.onInitializeSuccess.AddListener(OnInitializeSuccess);
_purchaser.onPurchaseSuccess.AddListener(OnPurchaseSuccess);
_purchaser.AddProduct(kProductIDConsumable, AppcoinsProductType.Consumable);
_purchaser.AddProduct(kProductIDNonConsumable, AppcoinsProductType.NonConsumable);
_purchaser.InitializePurchasing();
_purchaser.SetupCustomValidator(this);
}