@Override
public Representation getRepresentation(org.restlet.data.Status status, Request request, Response response) {
TreeWriter tree = new TreeWriter(globalRuntime);
tree.startDocument(URI.create("http://example.com/"));
tree.addStartElement(BaseResource.pr_error);
tree.startContent();
tree.addStartElement(BaseResource.pr_code);
tree.startContent();
tree.addText("" + status.getCode());
tree.addEndElement();
tree.addStartElement(BaseResource.pr_message);