@Override
    public void uninstall(ApplicationId appId) {
        checkNotNull(appId, APP_ID_NULL);
        updateStoreAndWaitForNotificationHandling(appId, store::remove);
    }
@Test
    public void uninstall() {
        install();
        mgr.uninstall(APP_ID);
        assertEquals("incorrect app count", 0, mgr.getApplications().size());
    }