assertTrue(crawlerEngineClient.equals(crawlerEngineClient));
        assertFalse(crawlerEngineClient.equals(null));
        assertFalse(crawlerEngineClient.equals("string"));

        CrawlerEngineClient other = new CrawlerEngineClient();
        // Different instances should not be equal by default
        assertFalse(crawlerEngineClient.equals(other));
    }

    // Test getClass method