queue.setId(123L);
        assertEquals(Long.valueOf(123L), queue.getId());

        queue.setId(null);
        assertNull(queue.getId());
    }

    public void test_idWithStringType() {
        // Test ID getter/setter with String
        UrlQueueImpl<String> queue = new UrlQueueImpl<>();

        queue.setId("id123");
        assertEquals("id123", queue.getId());
    }