File backupRepository = new File(repository.getPath() + ".bak");
assertFalse("Backup repository should NOT exist",
backupRepository.exists());
Element device = accessor.retrieveDeviceElement("PC");
Element policies = device.getChild("policies", device.getNamespace());
Element newPolicy = new Element("policy", device.getNamespace());
newPolicy.setAttribute("name", "custom.mypolicy");
newPolicy.setAttribute("value", "xyz");
policies.addContent(newPolicy);