};
interceptor.addNotificationListener(metadata, listener, null, null);
interceptor.addNotificationListener(metadata, listener, null, listener);
Object handback = new Object();
interceptor.addNotificationListener(metadata, listener, null, handback);
assertEquals(1, interceptor.getNotificationListenerWrappers().size());
Object wrapper = ((Map.Entry)interceptor.getNotificationListenerWrappers().entrySet().iterator().next()).getValue();
assertEquals(3, interceptor.getNotificationListenerWrapperReferenceCount(wrapper));
assertEquals(1, interceptor.getObjectNames().size());