System.out.println(pattern);
    private RE buildPattern(Element root, String elementName)            throws ClassNotFoundException {        Node node = root.getElementsByTagName(elementName).item(0);        //any pattern to no match with methods        String pattern = "\\b9876546321\\b";        if (node != null) {            pattern = this.buildPattern((Element) node);        }        log.debug("Pattern compiled: " + pattern);        System.out.println(pattern);        return new RE(pattern);    }