/**
* Buys the item with the given <code>itemId</code>.
*
* @param itemId id of item to be purchased
* @param payload a string you want to be assigned to the purchase. This string
* is saved in a static variable and will be given bacl to you when the
* purchase is completed.
* @throws InsufficientFundsException
* @throws VirtualItemNotFoundException
*/
public static void buy(String itemId, String payload)
{
PurchasableVirtualItem pvi = (PurchasableVirtualItem)StoreInfo.getVirtualItem(itemId);
pvi.buy(payload);
}
