public override CreateOrderBuilder AddFee(IRowBuilder itemFee)
{
if (itemFee.GetType() == new ShippingFeeBuilder().GetType())
{
ShippingFeeRows.Add((ShippingFeeBuilder)itemFee);
}
else
{
InvoiceFeeRows.Add((InvoiceFeeBuilder)itemFee);
}
return(this);
}
