DomainClient domainClient = domainMasterLifecycleUtil.getDomainClient();
ModelNode request = new ModelNode();
request.get(OP).set("read-config-as-xml");
request.get(OP_ADDR).setEmptyList().add(HOST, "master");
ModelNode response = domainClient.execute(request);
validateResponse(response);
// TODO make some more assertions about result content
request.get(OP_ADDR).setEmptyList().add(HOST, "slave");
response = domainClient.execute(request);