enqueueHelper(event, label);
  }

  private void enqueueHelper(Event<L> event, Object label) {
    checkNotNull(event, "event");
    checkNotNull(label, "label");
    synchronized (listeners) {
      for (PerListenerQueue<L> queue : listeners) {
        queue.add(event, label);
      }
    }
  }

  /**

     * @return
     */
    private synchronized SmbTreeImpl getTreeInternal() {
        final SmbTreeImpl t = this.tree;
        if (t != null) {
            return t;
        }
        if (this.delegate != null) {
            return this.delegate.getTreeInternal();
        }
        return null;
    }

    /**
     * @param t
     */
    private synchronized void switchTree(final SmbTreeImpl t) {

                        // Access is synchronized internally in the actual implementation
                        // Here we just verify no concurrent modification exceptions occur
                        String url = "http://example.com/thread" + threadIndex + "/doc" + j;
                        // Simulate the synchronized access that happens in deleteDocument()
                        synchronized (mockCallback) {

  @Override
  public void publish(@Nullable LogRecord record) {
    synchronized (lock) {
      if (record != null) {
        list.add(record);
      }
    }
  }

  @Override
  public void flush() {}

  @Override
  public void close() {}

  public void clear() {
    synchronized (lock) {
      list.clear();
    }
  }

  /** Returns a snapshot of the logged records. */

    }

    @Override
    public void onSuccess(String result) {
      synchronized (monitor) {
        assertFalse(wasCalled);
        wasCalled = true;
        assertThat(result).isEqualTo(value);
      }
    }

    @Override
    public synchronized void onFailure(Throwable t) {
      synchronized (monitor) {
        assertFalse(wasCalled);
        wasCalled = true;

        }
      }
    }

    synchronized void write(int b) throws IOException {
      update(1);
      out.write(b);
    }

    synchronized void write(byte[] b, int off, int len) throws IOException {
      update(len);
      out.write(b, off, len);
    }

    synchronized void close() throws IOException {
      out.close();
    }

    synchronized void flush() throws IOException {

  }

  /** Set the OAuth session for this client. */
  public synchronized void initOauthSession(OAuthSession session) {
    this.session = session;
    this.notifyAll();
  }

  /** Waits for an OAuth session for this client to be set. */
  public synchronized void awaitAccessToken(Timeout timeout) throws InterruptedIOException {
    while (session == null) {

    }

    @Override
    public synchronized void insert(final KuromojiItem item) {
        try (KuromojiUpdater updater = new KuromojiUpdater(item)) {
            reload(updater);
        }
    }

    @Override
    public synchronized void update(final KuromojiItem item) {
        try (KuromojiUpdater updater = new KuromojiUpdater(item)) {

            }
        }
        obj = getCachedAddress(name);
        if (obj == null) {
            synchronized (this.inFlightLookups) {
                this.inFlightLookups.add(name);
            }
        }

        return obj;
    }

    private void updateLookupTable(final Name name) {
        synchronized (this.inFlightLookups) {
            this.inFlightLookups.remove(name);

    }

    @Override
    public void onSuccess(String result) {
      synchronized (monitor) {
        assertFalse(wasCalled);
        wasCalled = true;
        assertThat(result).isEqualTo(value);
      }
    }

    @Override
    public synchronized void onFailure(Throwable t) {
      synchronized (monitor) {
        assertFalse(wasCalled);
        wasCalled = true;