public void endDescription() throws SAXException {
        endElement(RDF, "Description", "rdf:Description");
        endPrefixMapping(prefix);

        this.uri = null;
        this.prefix = null;
    }
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