// Should be null after removal
        assertNull(crawlerContext.removeSitemaps());

        // Test with null
        crawlerContext.addSitemaps(null);
        assertNull(crawlerContext.removeSitemaps());

        // Test with empty array
        crawlerContext.addSitemaps(new String[0]);
        String[] emptyArray = crawlerContext.removeSitemaps();
        assertNotNull(emptyArray);

        SitemapUrl sitemap3 = new SitemapUrl();
        sitemap3.setLoc("https://example.com/page3");

        SitemapSet sitemapSet = new SitemapSet();
        sitemapSet.addSitemap(sitemap1);
        sitemapSet.addSitemap(sitemap2);
        sitemapSet.addSitemap(sitemap3);

        when(crawlerContainer.getComponent("sitemapsHelper")).thenReturn(sitemapsHelper);
        try {

        assertNotNull(matched);
    }

    public void test_addSitemap() {
        // Test addSitemap method
        RobotsTxt robotsTxt = new RobotsTxt();

        robotsTxt.addSitemap("https://example.com/sitemap.xml");
        robotsTxt.addSitemap("https://example.com/sitemap2.xml");

        String[] sitemaps = robotsTxt.getSitemaps();
        assertEquals(2, sitemaps.length);

                    final SitemapUrl sitemapUrl = new SitemapUrl();
                    sitemapUrl.setLoc(url);
                    sitemapSet.addSitemap(sitemapUrl);
                }
            }
            return sitemapSet;
        } catch (final Exception e) {
            throw new SitemapsException("Could not parse Text Sitemaps.", e);
        }

    }

    /**
     * Adds a sitemap URL to the list of sitemaps.
     *
     * @param url The URL of the sitemap to be added
     */
    public void addSitemap(final String url) {
        if (!sitemapList.contains(url)) {
            sitemapList.add(url);
        }
    }

    /**
     * Returns an array of sitemap URLs.
     *

                    // Try to parse as Sitemap directive
                    value = getValue(SITEMAP_RECORD, line);
                    if (value != null && value.length() > 0) {
                        robotsTxt.addSitemap(value);
                        continue;
                    }

                    // If we reach here, the line didn't match any known directive
                    // Silently ignore it to allow parsing to continue