private XMLEventWriter writer;
private XMLEventFactory factory;
public FeatureMetaDataExporter(OutputStream out) throws XMLStreamException {
XMLOutputFactory outputFactory = XMLOutputFactory.newInstance();
writer = outputFactory.createXMLEventWriter(out);
factory = XMLEventFactory.newInstance();
StartDocument startDocument = factory.createStartDocument();
writer.add(startDocument);
newLine();
writer.add(factory.createStartElement("", "", "features"));