}
protected void runTest() throws Throwable {
DocumentBuilder db = dbf.newDocumentBuilder();
Document document1 = db.newDocument();
Document document2 = db.newDocument();
Element parent = document1.createElementNS(null, "parent");
Element child1 = document1.createElementNS(null, "child1");
Element child2 = document1.createElementNS(null, "child2");
Element child3 = document1.createElementNS(null, "child3");
parent.appendChild(child1);