RequestData requestData = childUrls.iterator().next();
            assertEquals("https://example.com/page1", requestData.getUrl());
        }
    }

    public void test_processMultipleSitemaps() {
        // Setup
        ResponseData responseData = new ResponseData();
        byte[] content = "<sitemapindex></sitemapindex>".getBytes();
        responseData.setResponseBody(content);