.single()
}


internal
fun DocumentBuilderFactory.fetchVersionsFromMavenMetadata(url: String): List<String> =
    newDocumentBuilder()
        .parse(url)
        .getElementsByTagName("version").let { versions ->
            (0 until versions.length)
                .map { idx -> (versions.item(idx) as Element).textContent }
                .reversed()
        }


internal

    fess.src = '//<Fess Server Name>/js/ss/fess-ss.min.js';
    fess.charset = 'utf-8';
    fess.setAttribute('id', 'fess-ss');
    fess.setAttribute('fess-url', '//<Server Name>/json');
    var s = document.getElementsByTagName('script')[0];
    s.parentNode.insertBefore(fess, s);
  })();
</script>
<fess:search></fess:search>
```

An example of Fess Site Search in use is below: