gistfile1.txt

public void WithdrawMoney(decimal amount)
{
    Atm atm = _repository.Get();
    _atmService.WithdrawMoney(atm, amount);
    _repository.Save(_atm);
}

public sealed class AtmService // Domain service
{
    public void WithdrawMoney(Atm atm, decimal amount)
    {
        if (!atm.CanDispenseMoney(amount))
            return;
 
        decimal amountWithCommission = atm.CalculateAmountWithCommission(amount);
        Result result = _paymentGateway.ChargePayment(amountWithCommission);
 
        if (result.IsFailure)
            return;
 
        atm.DispenseMoney(amount);
    }
}