Extension method to transform XDocument to XmlDocument

XDocumentToXmlDocument.cs

        /// <summary>
        /// Converts XDocument to XmlDocument.
        /// Original source: <see cref="http://stackoverflow.com/questions/1508572/converting-xdocument-to-xmldocument-and-vice-versa"/>
        /// </summary>
        /// <param name="document">XDocument instance to be converted.</param>
        /// <returns></returns>
        public static XmlDocument XToXmlDocument(this XDocument document)
        {
            XmlDocument xmlDocument = new XmlDocument();
            using (XmlReader xmlReader = document.CreateReader())
            {
                xmlDocument.Load(xmlReader);
            }

            return xmlDocument;
        }