assertNotNull(result);
        assertTrue(result.contains("Session Id:"));
    }

    // Test execute method with mixed null and non-null config IDs
    @Test
    public void test_execute_mixedConfigIds() {
        // Setup test
        crawlJob = new CrawlJob() {
            @Override
            protected int getRunningJobCount() {
                return 0;
            }

            @Override