.url("http://publicobject.com/helloworld.txt")
        .build();

    client.newCall(request).enqueue(new Callback() {
      @Override public void onFailure(Call call, IOException e) {
        e.printStackTrace();
      }

      @Override public void onResponse(Call call, Response response) throws IOException {
        try (ResponseBody responseBody = response.body()) {

    private Properties userProperties;

    @Override
    public File getGlobalSettingsFile() {
        return globalSettingsFile;
    }

    @Override
    public DefaultSettingsBuildingRequest setGlobalSettingsFile(File globalSettingsFile) {
        this.globalSettingsFile = globalSettingsFile;

        return this;
    }

    @Override
    public SettingsSource getGlobalSettingsSource() {

    @Override
    public GetRequestBuilder prepareGet() {
        return client.prepareGet();
    }

    @Override
    public GetRequestBuilder prepareGet(final String index, final String id) {
        return client.prepareGet(index, id);
    }

    @Override
    public ActionFuture<MultiGetResponse> multiGet(final MultiGetRequest request) {
        return client.multiGet(request);
    }

    @Override

  }

  @Override
  protected Multiset<E> delegate() {
    return forwardMultiset();
  }

  @Override
  public SortedMultiset<E> descendingMultiset() {
    return forwardMultiset();
  }

  @Override
  public @Nullable Entry<E> firstEntry() {
    return forwardMultiset().lastEntry();
  }

  @Override
  public @Nullable Entry<E> lastEntry() {

              public int hashCode() {
                return map.hashCode();
              }

              @Override
              public boolean equals(@Nullable Object o) {
                return map.equals(o);
              }

              @Override
              public String toString() {
                return map.toString();
              }

              @Override

      this.iterator = iterator;
    }

    @Override
    public boolean hasNext() {
      return iterator.hasNext();
    }

    @Override
    public T next() {
      try {
        return iterator.next();
      } catch (NoSuchElementException e) {
        nextThrewException = true;
        throw e;
      }
    }

    @Override
    public void remove() {
      if (nextThrewException) {

     */
    @Override
    public String getUrl() {
        return url;
    }

    /*
     * (non-Javadoc)
     *
     * @see org.codelibs.fess.crawler.entity.UrlQueue#setUrl(java.lang.String)
     */
    @Override
    public void setUrl(final String url) {
        this.url = url;
    }

    @Override
    public String getMetaData() {

  public boolean contains(@Nullable Object element) {
    return count(element) > 0;
  }

  // Modification Operations
  @CanIgnoreReturnValue
  @Override
  public final boolean add(@ParametricNullness E element) {
    add(element, 1);
    return true;
  }

  @CanIgnoreReturnValue
  @Override
  public int add(@ParametricNullness E element, int occurrences) {
    throw new UnsupportedOperationException();
  }

      checkValid(k);
    }
  }

  @Override
  public @Nullable Entry<K, V> ceilingEntry(K key) {
    return delegate.ceilingEntry(checkValid(key));
  }

  @Override
  public @Nullable K ceilingKey(K key) {
    return delegate.ceilingKey(checkValid(key));
  }

  @Override
  public void clear() {
    delegate.clear();
  }

  @Override
  public Comparator<? super K> comparator() {

  }

  @Override
  protected Multiset<E> delegate() {
    return forwardMultiset();
  }

  @Override
  public SortedMultiset<E> descendingMultiset() {
    return forwardMultiset();
  }

  @Override
  public @Nullable Entry<E> firstEntry() {
    return forwardMultiset().lastEntry();
  }

  @Override
  public @Nullable Entry<E> lastEntry() {