@Override
    public void startElement(String arg0, String arg1, String arg2,
            Attributes arg3) throws SAXException {
        if (ch != null) {
            ch.startElement(arg0, arg1, arg2, arg3);
        } else {
            vst.rootNamespace(arg0, locator);
            ch.startElement(arg0, arg1, arg2, arg3);
        }
    }
@see org.xml.sax.ContentHandler#startElement(java.lang.String,
     java.lang.String, java.lang.String, org.xml.sax.Attributes)
src/nu/validator/servlet/BufferingRootNamespaceSniffer.java