public void WriteTo(Stream out1)
        {
            ExternalLinkDocument doc = new ExternalLinkDocument();

            doc.ExternalLink = (/*setter*/ link);
            doc.Save(out1);
        }
 public void ReadFrom(Stream is1)
 {
     try
     {
         XmlDocument          xmldoc = ConvertStreamToXml(is1);
         ExternalLinkDocument doc    = ExternalLinkDocument.Parse(xmldoc, NamespaceManager);
         link = doc.ExternalLink;
     }
     catch (XmlException e)
     {
         throw new IOException(e.Message);
     }
 }