* @throws Exception
     */
    @Test
    public void testFromDir_FileSystem() throws Exception {
        final Traverser traverser = TraversalUtil.getTraverser("org/codelibs/core/io/xxx");
        assertThat(traverser, is(notNullValue()));
        assertThat(traverser instanceof FileSystemTraverser, is(true));

        final List<String> list = new ArrayList<String>();
        traverser.forEach((ResourceHandler) (path, is) -> list.add(path));

 */
@Immutable
@Experimental
public final class Tools {
    private Tools() {}

    public static final String MVN_CMD = "mvn";
    public static final String MVN_NAME = "Maven";

    public static final String MVNENC_CMD = "mvnenc";
    public static final String MVNENC_NAME = "Maven Password Encrypting Tool";

    public static final String MVNSHELL_CMD = "mvnsh";
    public static final String MVNSHELL_NAME = "Maven Shell Tool";

    protected static final Class<?> suppressUnusedImportLocalDateTime = LocalDateTime.class;

    // ===================================================================================
    //                                                                           Singleton
    //                                                                           =========
    private static final PathMappingDbm _instance = new PathMappingDbm();

 * This class encapsulates the metadata for a Unicode string including its length,
 * maximum length, and pointer to the actual string data.
 */
public class PacUnicodeString {

    private final short length;
    private final short maxLength;
    private final int pointer;

    /**
     * Constructs a new PacUnicodeString instance.
     *
     * @param length the actual length of the string in bytes

     */
    public ExtractException(final String message, final Throwable cause) {
        super(message, cause);
    }

    /**
     * Constructs a new ExtractException with the specified detail message.
     *
     * @param message the detail message. The detail message is saved for later retrieval by the {@link #getMessage()} method.
     */
    public ExtractException(final String message) {
        super(message);
    }

  private static final class Dummies {

    @Keep
    public static final class InMemoryPrintStream extends PrintStream {
      @Keep
      public InMemoryPrintStream() {
        super(new ByteArrayOutputStream());
      }
    }

    @Keep
    public static final class InMemoryPrintWriter extends PrintWriter {
      @Keep

    SmbComCreateDirectory(final String directoryName) {
        this.path = directoryName;
        command = SMB_COM_CREATE_DIRECTORY;
    }

    @Override
    int writeParameterWordsWireFormat(final byte[] dst, final int dstIndex) {
        return 0;
    }

    @Override
    int writeBytesWireFormat(final byte[] dst, int dstIndex) {
        final int start = dstIndex;

    private final Path stopwordPath;

    private final long reloadInterval;

    private final boolean ignoreCase;

    public ReloadableStopFilterFactory(final IndexSettings indexSettings, final Environment environment, final String name,
            final Settings settings) {
        super(indexSettings, name, settings);

        final String path = settings.get("stopwords_path");

    public void functionScore(OperatorCall<KeyMatchCQ> queryLambda, ScoreFunctionCall<ScoreFunctionCreator<KeyMatchCQ>> functionsLambda,
            final ConditionOptionCall<FunctionScoreQueryBuilder> opLambda) {
        KeyMatchCQ cq = new KeyMatchCQ();
        queryLambda.callback(cq);
        final Collection<FilterFunctionBuilder> list = new ArrayList<>();
        if (functionsLambda != null) {

     */
    public static String digest(final String algorithm, final String text) {
        assertArgumentNotEmpty("algorithm", algorithm);

        if (text == null) {
            return null;
        }

        final MessageDigest msgDigest = getInstance(algorithm);
        try {
            msgDigest.update(text.getBytes("UTF-8"));
        } catch (final UnsupportedEncodingException e) {