public static void BuyProduct(InAppProductTag productTag, BuyProductCallback callback)
        {
            if (!Initialized)
            {
                return;
            }
            var product = GetProduct(productTag);

            if (product is null || !product.availableToPurchase)
            {
                return;
            }
            _buyProductCallback = callback;
            _storeController.InitiatePurchase(product);
        }
 public static Product GetProduct(InAppProductTag productTag)
 {
     return(_storeController?.products.WithID(productTag.ToString()));
 }