question: public void namespaceAfterStartElement ( String prefix , String uri ) throws SAXException { if ( m_firstTagNotEmitted && m_firstElementURI == null && m_firstElementName != null ) { String prefix1 = getPrefixPart ( m_firstElementName ) ; if ( prefix1 == null && EMPTYSTRING . equals ( prefix ) ) { m_firstElementURI = uri ; } } startPrefixMapping ( prefix , uri , false ) ; }
target:  This method is used when a prefix/uri namespace mapping is indicated after the element was started with a startElement() and before and endElement(). startPrefixMapping(prefix,uri) would be used before the startElement() call.