public void startDescription(String about, String prefix, String uri) throws SAXException {
        this.prefix = prefix;
        this.uri = uri;

        startPrefixMapping(prefix, uri);
        AttributesImpl attributes = new AttributesImpl();
        attributes.addAttribute(RDF, "about", "rdf:about", "CDATA", about);
        startElement(RDF, "Description", "rdf:Description", attributes);
    }
Ends the XMP document by writing the following footer and
clearing the namespace mappings:
<pre>
&lt;/rdf:RDF&gt;
</pre>
tika-core/src/main/java/org/apache/tika/sax/XMPContentHandler.java