// Test that UrlQueueImpl implements UrlQueue
        UrlQueueImpl<Long> queue = new UrlQueueImpl<>();
        assertTrue(queue instanceof UrlQueue);
    }

    public void test_genericTypeFlexibility() {
        // Test with different generic types
        UrlQueueImpl<Integer> intQueue = new UrlQueueImpl<>();
        intQueue.setId(42);
        assertEquals(Integer.valueOf(42), intQueue.getId());

        // Test that AccessResultImpl implements AccessResult
        AccessResultImpl<Long> result = new AccessResultImpl<>();
        assertTrue(result instanceof AccessResult);
    }

    public void test_genericTypeFlexibility() {
        // Test with different generic types
        AccessResultImpl<Integer> intResult = new AccessResultImpl<>();
        intResult.setId(42);
        assertEquals(Integer.valueOf(42), intResult.getId());

        assertEquals(1, CloseableTestComponent.getCloseCount());
    }

    /**
     * Test that factory can be used with different generic types
     */
    public void test_genericTypeFlexibility() throws Exception {
        // String type
        container.singleton("integerComponent", 42);
        CrawlerPooledObjectFactory<Integer> intFactory = new CrawlerPooledObjectFactory<>();