assertTrue("HTTP status code constants should be defined", true);
    }

    /**
     * Test getAnchorSet with null input
     */
    @Test
    public void test_getAnchorSet_withNull() {
        FessCrawlerThread crawlerThread = new FessCrawlerThread();

        Set<RequestData> result = crawlerThread.getAnchorSet(null);
        assertNull(result, "getAnchorSet should return null for null input");