Set<RequestData> childUrls = e.getChildUrlList();
            assertNotNull(childUrls);
            assertEquals(0, childUrls.size());
        }
    }

    public void test_processSitemapWithNullEntry() {
        // Setup - test handling of null sitemap in list
        ResponseData responseData = new ResponseData();
        byte[] content = "<sitemapindex></sitemapindex>".getBytes();