OrderApiGateway

OrderApiGateway.cs

public class OrderApiGateway
{
    private readonly TaxCodeCalculator taxCalculator;
    
    public OrderApiGateway(TaxCodeCalculator taxCalculator)
    {
        this.taxCalculator = taxCalculator;
    }
    public string GetOrderNumber()
    {
        return $"SDNU-{taxCalculator.GetCode()}";
    }
}