public boolean equals(final Object obj) {
        if (!(obj instanceof final SitemapUrl sitemapUrl)) {
            return false;
        }
        if (StringUtil.equals(loc, sitemapUrl.loc) && StringUtil.equals(changefreq, sitemapUrl.changefreq)
                && StringUtil.equals(lastmod, sitemapUrl.lastmod) && StringUtil.equals(priority, sitemapUrl.priority)) {
            return true;
        }
        return false;
    }

        assertEquals("monthly", ((SitemapUrl) sitemaps[0]).getChangefreq());
        assertEquals("0.8", ((SitemapUrl) sitemaps[0]).getPriority());

        assertNull(sitemaps[1].getLastmod());
        assertEquals("http://www.example.com/catalog?item=12&desc=vacation_hawaii", sitemaps[1].getLoc());
        assertEquals("weekly", ((SitemapUrl) sitemaps[1]).getChangefreq());
        assertNull(((SitemapUrl) sitemaps[1]).getPriority());

                if (StringUtil.isNotBlank(url) && (url.startsWith("http://") || url.startsWith("https://"))) {
                    final SitemapUrl sitemapUrl = new SitemapUrl();
                    sitemapUrl.setLoc(url);
                    sitemapSet.addSitemap(sitemapUrl);
                }
            }
            return sitemapSet;
        } catch (final Exception e) {

        this.lastmod = lastmod;
    }

    @Override
    public boolean equals(final Object obj) {
        if (!(obj instanceof final SitemapFile sitemapUrl)) {
            return false;
        }
        if (StringUtil.equals(loc, sitemapUrl.loc) && StringUtil.equals(lastmod, sitemapUrl.lastmod)) {
            return true;
        }
        return false;
    }

    @Override
    public int hashCode() {