source.build();
target.build();
CountDownLatch startSignal = new CountDownLatch(1);
CountDownLatch doneSignal = new CountDownLatch(1);
MockStaticInvoker invoker = new MockStaticInvoker(hello, new SimpleTargetImpl(startSignal, doneSignal));
source.setTargetInvoker(invoker);
Message msg = factory.createMessage();
msg.setBody("foo");
msg.setTargetInvoker(invoker);