Litle.Sdk.customBilling.Serialize C# (CSharp) Method

        public string Serialize()
        {
            string xml = "";
            if (phone != null) xml += "\r\n<phone>" + SecurityElement.Escape(phone) + "</phone>";
            else if (city != null) xml += "\r\n<city>" + SecurityElement.Escape(city) + "</city>";
            else if (url != null) xml += "\r\n<url>" + SecurityElement.Escape(url) + "</url>";
            if (descriptor != null) xml += "\r\n<descriptor>" + SecurityElement.Escape(descriptor) + "</descriptor>";
            return xml;
        }