public bool CanPurchaseItem(StoreItem item, BankPlayer bank)
        {
            bool result = false;

            if (item != null)
            {
                if (bank.CanSendTransfer(item.PriceCoinsA, TypeCoins.A) && bank.CanSendTransfer(item.PriceCoinsB, TypeCoins.B))
                {
                    result = true;
                }
            }

            return(result);
        }
        public bool BuyItem(String id, BankPlayer bank)
        {
            bool result = false;

            StoreItem item = GetItem(id);

            if (CanPurchaseItem(item, bank) == true)
            {
                if (bank.SendTransfer(item.PriceCoinsA, TypeCoins.A))
                {
                    creditsA += item.PriceCoinsA;
                }
                if (bank.SendTransfer(item.PriceCoinsB, TypeCoins.B))
                {
                    creditsB += item.PriceCoinsB;
                }
                result = true;
            }

            return(result);
        }