field = Client.class.getDeclaredField("callbackPollers");
field.setAccessible(true);
Map callbackPollers = (Map)field.get(client);
assertEquals(1, callbackPollers.size());
CallbackPoller callbackPoller =
(CallbackPoller)callbackPollers.values().iterator().next();
field = CallbackPoller.class.getDeclaredField("reportStatistics");
field.setAccessible(true);
assertEquals(true, ((Boolean) field.get(callbackPoller)).booleanValue());