// There should be 1 MultiplexingManager now that Client is connected.
assertEquals(1, allManagers.size());
// Add a push CallbackHandler.
InvokerCallbackHandler testCallbackHandler = new TestCallbackHandler();
client.addListener(testCallbackHandler, new HashMap(), "foobar");
// There should still be 1 MultiplexingManager, since client invoker and
// server invoker should be using the same connection.
assertEquals(1, allManagers.size());