*
     * @param conn
     *            {@link JarURLConnection}. Must not be {@literal null}.
     * @return {@link JarFile}
     */
    public static JarFile getJarFile(final JarURLConnection conn) {
        assertArgumentNotNull("conn", conn);

        try {
            return conn.getJarFile();
        } catch (final IOException e) {

    protected List<String> loadDataStoreNameList() {
        final Set<String> nameSet = new HashSet<>();
        final File[] jarFiles = ResourceUtil.getPluginJarFiles(PluginHelper.ArtifactType.DATA_STORE.getId());
        for (final File jarFile : jarFiles) {
            try (FileSystem fs = FileSystems.newFileSystem(jarFile.toPath(), ClassLoader.getSystemClassLoader())) {
                final Path xmlPath = fs.getPath("fess_ds++.xml");

                    final JarURLConnection jarURLConnection = (JarURLConnection) resource.openConnection();
                    try (JarFile jarFile = jarURLConnection.getJarFile()) {
                        final Enumeration<JarEntry> entries = jarFile.entries();
                        while (entries.hasMoreElements()) {
                            final JarEntry entry = entries.nextElement();

    protected void appendJarFile(final String cpSeparator, final StringBuilder buf, final File libDir, final String basePath) {
        final File[] jarFiles = libDir.listFiles((FilenameFilter) (dir, name) -> name.toLowerCase().endsWith(".jar"));
        if (jarFiles != null) {
            for (final File file : jarFiles) {
                buf.append(cpSeparator);
                buf.append(basePath);
                buf.append(file.getName());

by
které
co
nebo
ten
tak
má
při
od
po
jsou
jak
další
ale
si
se
ve
to
jako
za
zpět
ze
do
pro
je
na
atd
atp
jakmile
přičemž
já
on
ona
ono
oni
ony
my
vy
jí
ji
mě
mne
jemu
tomu
těm
těmu
němu
němuž
jehož
jíž
jelikož
jež
jakož

        File[] jarFiles = ResourceUtil.getJarFiles("fess");
        assertNotNull(jarFiles);
        // Should return empty array when no servlet context available in test
        assertEquals(0, jarFiles.length);

        // Test with empty prefix
        jarFiles = ResourceUtil.getJarFiles("");
        assertNotNull(jarFiles);
        assertEquals(0, jarFiles.length);
    }

            final List<Artifact> list = new ArrayList<>(jarFiles.length);
            for (final File file : jarFiles) {
                list.add(getArtifactFromFileName(artifactType, file.getName()));
            }
            list.sort(Comparator.comparing(Artifact::getName));
            return list.toArray(new Artifact[list.size()]);
        }

        final File[] jarFiles = ResourceUtil.getPluginJarFiles(artifactType.getId());

        },
        "czech_keywords": {

        },
        "czech_keywords": {

org.bs
edu.bs
gov.bs

// bt : https://www.iana.org/domains/root/db/bt.html
bt
com.bt
edu.bt
gov.bt
net.bt
org.bt

// bv : No registrations at this time.
// Submitted by registry <jarle@uninett.no>
bv

// bw : https://www.iana.org/domains/root/db/bw.html
// http://www.gobin.info/domainname/bw.doc
// list of other 2nd level tlds ?
bw
co.bw
org.bw