// method to get a list of allowed carriers for this shipment
public static XmlRpcStruct GetCarriers(string apiUrl, string sessionId, object[] args)
{
IShipment proxy = (IShipment)XmlRpcProxyGen.Create(typeof(IShipment));
proxy.Url = apiUrl;
return(proxy.GetCarriers(sessionId, _sales_order_shipment_getCarriers, args));
}