private static string ImageUrlFromXml(RazorLibraryCore ctx, DynamicXml media, string cropProperty, string cropName)
        {
            string url = null;

            if (media != null)
            {
                var crop = new DynamicXml(media.DescendantsOrSelf(x => x.Name == cropProperty).FirstOrDefault().ToXml());
                try
                {
                    if (crop != null)
                    {
                        dynamic c = crop.Find("@name", cropName);
                        url = (string)c.url;
                    }
                }
                catch { }

                if (string.IsNullOrWhiteSpace(url))
                {
                    var f = media.Descendants(x => x.Name == "umbracoFile").FirstOrDefault();
                    if (f != null)
                    {
                        url = f.InnerText;
                    }
                }
            }
            return(url ?? "");
        }