public ActionResult PDF(string url = null, List <string> otherUrls = null)
        {
            if (url != null)
            {
                url = "http://" + Request.Url.Authority + url;
            }

            if (otherUrls == null)
            {
                otherUrls = new List <string>();
            }

            return(File(
                       _applicationServices.CreatePDF(url, otherUrls.ToArray()),
                       "application/pdf"
                       ));
        }