public ApplicationType UpdateApp(ApplicationType app)
        {
            var xml = _wrapper.UpdateApp(
                app.app_id,
                app.app_name,
                app.business_criticality,
                app.policy,
                app.business_owner,
                app.business_owner_email);

            if (string.IsNullOrWhiteSpace(xml))
            {
                return(null);
            }

            var appinfo = XmlParseHelper.Parse <appinfo>(xml);

            if (appinfo.application.Count() == 0)
            {
                return(null);
            }

            return(XmlParseHelper.Parse <appinfo>(xml).application[0]);
        }