* @param writableStackTrace whether the stack trace should be writable
     */
    protected FessSystemException(final String message, final boolean enableSuppression, final boolean writableStackTrace) {
        super(message, null, enableSuppression, writableStackTrace);
    }

    return 1;
  }

  @Override
  public boolean contains(@Nullable Object target) {
    return element.equals(target);
  }

  @Override
  public UnmodifiableIterator<E> iterator() {
    return singletonIterator(element);
  }

  @Override
  public ImmutableList<E> asList() {
    return ImmutableList.of(element);
  }

  @Override
  boolean isPartialView() {
    return false;
  }

  @Override

@GwtCompatible
final class Present<T> extends Optional<T> {
  private final T reference;

  Present(T reference) {
    this.reference = reference;
  }

  @Override
  public boolean isPresent() {
    return true;
  }

  @Override
  public T get() {
    return reference;
  }

  @Override
  public T or(T defaultValue) {

    /**
     * Checks if the request will be handled asynchronously.
     *
     * @return request was handled asynchronously
     */
    boolean isResponseAsync();

    /**
     *
     * @return next chained message
     */
    @Override
    CommonServerMessageBlockRequest getNext();

    /**
     * Splits this request for processing.
     *

     *
     * @param resolve true to enable DFS resolution
     */
    void setResolveInDfs(boolean resolve);

    /**
     * Checks if this request should be resolved in DFS.
     *
     * @return whether to resolve the request path in DFS
     */
    boolean isResolveInDfs();

    final Queue<OldExecutionList.RunnableExecutorPair> runnables = new LinkedList<>();
    boolean executed = false;

    void add(Runnable runnable, Executor executor) {
      Preconditions.checkNotNull(runnable, "Runnable was null.");
      Preconditions.checkNotNull(executor, "Executor was null.");

      boolean executeImmediate = false;

      synchronized (runnables) {
        if (!executed) {

 * <p>Here's an example that uses a user-defined finalization predicate:
 *
 * {@snippet :
 * final WeakHashMap<Object, Object> map = new WeakHashMap<>();
 * map.put(new Object(), Boolean.TRUE);
 * GcFinalization.awaitDone(new FinalizationPredicate() {
 *   public boolean isDone() {
 *     return map.isEmpty();
 *   }
 * });
 * }
 *
 * <p>Even if your non-test code does not use finalization, you can use this class to test for

            map = new HashMap();
        }
    }

    static LogStream log = LogStream.getInstance();
    static final boolean strictView = Config.getBoolean("jcifs.smb1.smb.client.dfs.strictView", false);
    static final long TTL = Config.getLong("jcifs.smb1.smb.client.dfs.ttl", 300);
    static final boolean DISABLED = Config.getBoolean("jcifs.smb1.smb.client.dfs.disabled", false);

    /**

     * a {@code -f} option.
     *
     * @return {@code true} if the project is the top level project for this build
     */
    boolean isTopProject();

    /**
     * Returns a boolean indicating if the project is a root project,
     * meaning that the {@link #getRootDirectory()} and {@link #getBasedir()}
     * points to the same directory, and that either {@link Model#isRoot()}

  @CanIgnoreReturnValue
  @Nullable N removeInEdge(E edge, boolean isSelfLoop);

  /** Remove {@code edge} from the set of outgoing edges. Returns the former successor node. */
  @CanIgnoreReturnValue
  N removeOutEdge(E edge);

  /**
   * Add {@code edge} to the set of incoming edges. Implicitly adds {@code node} as a predecessor.
   */
  void addInEdge(E edge, N node, boolean isSelfLoop);