Java Utililty Methods XML Node Serialize

final Writer writer = new OutputStreamWriter(new FileOutputStream(file), "UTF-8");
final TransformerHandler transformerHandler = FACTORY.newTransformerHandler();
final Transformer transformer = transformerHandler.getTransformer();
final Properties format = new Properties();
format.put(OutputKeys.METHOD, "xml");
format.put(OutputKeys.OMIT_XML_DECLARATION, "no");
format.put(OutputKeys.ENCODING, "UTF-8");
format.put(OutputKeys.INDENT, "yes");
...

try {
    DOMImplementationRegistry registry = DOMImplementationRegistry.newInstance();
    DOMImplementationLS lsImpl = (DOMImplementationLS) registry.getDOMImplementation("LS");
    LSSerializer serializer = lsImpl.createLSSerializer();
    return serializer.writeToString(node);
} catch (Exception e) {
    log.fine("could not serialise XML node: " + e);
    return "";
...

ByteArrayOutputStream bos = new ByteArrayOutputStream(1024);
serialise(n, bos);
return bos.toByteArray();

if (e != null) {
    try {
        DOMSource domSource = new DOMSource(e);
        Transformer serializer = TransformerFactory.newInstance().newTransformer();
        serializer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION,
                ((omitXMLDeclaration) ? "yes" : "no"));
        serializer.setOutputProperty(OutputKeys.INDENT, "yes");
        serializer.setOutputProperty(OutputKeys.ENCODING, UTF8_ENCODING);
...

StringWriter outText = new StringWriter();
serialize(new DOMSource(doc), outText);
return outText.toString();

TransformerHandler hd = newTransformerHandler();
Transformer serializer = hd.getTransformer();
serializer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
serializer.setOutputProperty(OutputKeys.INDENT, "yes");
DOMSource source = new DOMSource(n);
serializer.transform(source, sr);

StringWriter writer = new StringWriter();
try {
    TransformerFactory transformerFactory = TransformerFactory.newInstance();
    Transformer transformer = transformerFactory.newTransformer();
    transformer.transform(new DOMSource(node), new StreamResult(writer));
} catch (javax.xml.transform.TransformerException caught) {
    throw new Error(caught);
return writer.toString();

try {
    TransformerFactory tf = TransformerFactory.newInstance();
    Transformer transformer = tf.newTransformer();
    transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
    Source source = new DOMSource(node);
    StringWriter sw = new StringWriter();
    Result result = new StreamResult(sw);
    transformer.transform(source, result);
...

serialize(node, new StreamResult(new File(outdir, fileName)));

return serialize(nodeList, false);