public bool Execute()
{
// In real implementation make request to expensivePaymentGateway
if (_expensiveGateWay.IsGatewayAvaibale())
{
return(_expensiveGateWay.MakePayment(_amount));
}
if (_cheapGateWay.IsGatewayAvaibale())
{
return(_cheapGateWay.MakePayment(_amount));
}
return(false);
}