}
        return null;
    }

    /**
     * Returns the effective user session key.
     *
     * @param challenge The server challenge.
     * @return A <code>byte[]</code> containing the effective user session key,
     * used in SMB MAC signing and NTLMSSP signing and sealing.
     */
    public byte[] getUserSessionKey(final byte[] challenge) {
        if (hashesExternal) {

        return false;
    }

    /**
     * Retrieves information about the specified operation.
     *
     * @param operationName the operation name to look up.
     * @return an {@link Optional} containing the operation info, or empty if not found.
     */
    public Optional<OperationInfo> getOperationInfo(final String operationName) {
        try (CurlResponse response = ComponentUtil.getCurlHelper() //

     * Processes a document through the ingest pipeline if an ingest factory is available.
     * Applies all configured ingesters to transform and enrich the document data.
     *
     * @param accessResult the access result containing document metadata
     * @param map the document data map to process
     * @return the processed document map after applying all ingesters
     */

   * List<Class<?>> classes = Arrays.asList(Object.class, String.class, Number.class, Long.class);
   * return Iterables.filter(classes, subtypeOf(Number.class));
   * }
   *
   * The code above returns an iterable containing {@code Number.class} and {@code Long.class}.
   *
   * <p><b>Discouraged:</b> Prefer using {@code clazz::isAssignableFrom} or {@code x ->
   * clazz.isAssignableFrom(x)}, but note that lambdas do not have human-readable {@link

    int count = 0;
    for (int i = 0; i < sequence.length(); i++) {
      if (matches(sequence.charAt(i))) {
        count++;
      }
    }
    return count;
  }

  /**
   * Returns a string containing all non-matching characters of a character sequence, in order. For
   * example:
   *
   * {@snippet :
   * CharMatcher.is('a').removeFrom("bazaar")
   * }
   *
   * ... returns {@code "bzr"}.
   */

    return new Builder<Comparable<E>>(Ordering.natural()).create();
  }

  /**
   * Creates a new min-max priority queue using natural order, no maximum size, and initially
   * containing the given elements.
   */
  public static <E extends Comparable<E>> MinMaxPriorityQueue<E> create(
      Iterable<? extends E> initialContents) {
    return new Builder<E>(Ordering.natural()).create(initialContents);

   */
  public static <K extends @Nullable Object, V extends @Nullable Object> HashBiMap<K, V> create(
      int expectedSize) {
    return new HashBiMap<>(expectedSize);
  }

  /**
   * Constructs a new bimap containing initial values from {@code map}. The bimap is created with an
   * initial capacity sufficient to hold the mappings in the specified map.
   */

     *
     * @param className
     *            The class name. Must not be {@literal null} or empty.
     * @return An array containing the package name and the class name without the package.
     */
    public static String[] splitPackageAndShortClassName(final String className) {
        assertArgumentNotEmpty("className", className);

    private CacheEntry<DfsReferralDataInternal> referrals = null;
    private final Object referralsLock = new Object();

    /**
     * Constructs a DFS resolver implementation
     *
     * @param tc the CIFS context containing configuration
     */
    public DfsImpl(final CIFSContext tc) {
    }

    private Map<String, Map<String, CacheEntry<DfsReferralDataInternal>>> getTrustedDomains(final CIFSContext tf) throws SmbAuthException {

     * @param docId The document ID to retrieve
     * @param fields Array of field names to include in the result
     * @param userBean Optional user information for permission checking
     * @return Optional entity containing the document data if found
     */
    public OptionalEntity<Map<String, Object>> getDocumentByDocId(final String docId, final String[] fields,
            final OptionalThing<FessUserBean> userBean) {