}

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

        UrlQueueImpl<String> stringQueue = new UrlQueueImpl<>();
        stringQueue.setId("string-id");