@Override
public void messageTest(String msg) {
try {
ReferenceInvocation invoker = invokerA.newInvocation("inOut");
invoker.getMessage().setContent("message-test-in");
invoker.invoke();
// check that the correct message reference is returned from invoke
Assert.assertNotNull(invoker.getMessage().getContent());
Assert.assertEquals("message-test-out", invoker.getMessage().getContent());
} catch (Exception ex) {