/**
* Adds an rdf:Description.
* @param s
* @throws IOException
*/
public void AddRdfDescription(XmpSchema s)
{
writer.Write("<rdf:Description rdf:about=\"");
writer.Write(about);
writer.Write("\" ");
writer.Write(s.Xmlns);
writer.Write(">");
writer.Write(s.ToString());
writer.Write("</rdf:Description>\n");
}