def parse(String str, Document document = null) {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance()
        factory.setNamespaceAware(true)
        DocumentBuilder builder = factory.newDocumentBuilder()
        def parsed = builder.parse(new InputSource(new StringReader(str))).documentElement
        return document ? document.importNode(parsed, true) : parsed

     */
    public void testSetXIncludeAware() throws Exception {
        final SAXParserFactory spf = SAXParserFactoryUtil.newInstance();
        SAXParserFactoryUtil.setXIncludeAware(spf, true);
        spf.setNamespaceAware(true);
        final SAXParser parser = SAXParserFactoryUtil.newSAXParser(spf);

        final InputSource is = new InputSource(ResourceUtil.getResourceAsStream("org/codelibs/core/xml/include.xml"));