rg/sax/features/namespace-prefixes property or parsing will fail with a {@link org.xml.sax.SAXException SAXException}; if the XMLReader supports a false value for the http://xml.org/sax/features/namespaces property, that will also be used to improve efficiency.
@since SAX 2.0
@author David Megginson,
sax@megginson.com
@version 2.0
@see org.xml.sax.Parser
@see org.xml.sax.XMLReader