interceptor.addNotificationListener(metadata2, listener, null, null);
assertEquals(2, interceptor.getNotificationListenerWrappers().size());
assertEquals(2, interceptor.getObjectNames().size());
interceptor.removeNotificationListener(metadata1, listener, null, null);
assertEquals(1, interceptor.getNotificationListenerWrappers().size());
assertEquals(1, interceptor.getObjectNames().size());
interceptor.removeNotificationListener(metadata2, listener, null, null);
assertEquals(0, interceptor.getNotificationListenerWrappers().size());