public Map<Element, Element> create() throws Exception {
    return mapsImpl.create(contents);
  }

  @Benchmark
  public int iterate() {
    long retVal = 0;
    for (Object entry : map.entrySet()) {
      retVal += entry.hashCode();
    }
    return (int) retVal;
  }

  @Benchmark
  public int keyIterate() {
    long retVal = 0;
    for (Object key : map.keySet()) {

        }

        final Map<String, Object> map = new HashMap<>();
        BeanUtil.copyBeanToMap(responseData, map, CopyOptions::excludeWhitespace);
        for (final Map.Entry<String, Pattern> entry : regexMap.entrySet()) {
            String value = "";
            final Object obj = map.get(entry.getKey());
            if (obj != null) {
                value = obj.toString();
            }

    return (vs != null) ? vs : (values = new Values());
  }

  @LazyInit @CheckForNull transient Set<Entry<K, V>> entrySet;

  @Override
  public Set<Entry<K, V>> entrySet() {
    Set<Entry<K, V>> es = entrySet;
    return (es != null) ? es : (entrySet = new EntrySet());
  }

  // Iterator Support

  abstract class HashIterator<T> implements Iterator<T> {

    protected int maxClientFactorySize = 10000;

    public synchronized void register(final CrawlerClientFactory crawlerClientFactory) {
        clientMap.entrySet().stream().forEach(e -> load(crawlerClientFactory, e.getKey(), e.getValue()));
        clientFactoryList.add(crawlerClientFactory);
        if (clientFactoryList.size() > maxClientFactorySize) {

        this.source = location.getSource() != null ? new InputSource(location.getSource()) : null;
        this.locations = location.getLocations().isEmpty()
                ? null
                : location.getLocations().entrySet().stream()
                        .collect(Collectors.toMap(
                                e -> e.getKey(),
                                e -> e.getValue() == location ? this : new InputLocation(e.getValue())));

    testToString_formatting();
  }

  @CollectionFeature.Require(absent = NON_STANDARD_TOSTRING)
  public void testToString_formatting() {
    assertEquals(
        "map.toString() incorrect", expectedToString(getMap().entrySet()), getMap().toString());
  }

  private String expectedToString(Set<Entry<K, V>> entries) {
    Map<K, V> reference = new LinkedHashMap<>();
    for (Entry<K, V> entry : entries) {

                                response.isValid() ? "VALID" : "INVALID"));
        for (Map.Entry<SecDispatcher.ValidationResponse.Level, List<String>> entry :
                response.getReport().entrySet()) {
            Consumer<String> consumer = s -> context.terminal
                    .writer()
                    .println(messageBuilderFactory.builder().info(s).build());

        final Map<String, Object> factoryParamMap = new HashMap<>();
        factory.setInitParameterMap(factoryParamMap);

        // parameters
        for (final Map.Entry<String, String> entry : paramMap.entrySet()) {
            final String key = entry.getKey();
            if (key.startsWith(CRAWLER_PARAM_PREFIX)) {
                factoryParamMap.put(key.substring(CRAWLER_PARAM_PREFIX.length()), entry.getValue());
            }

            for (final Map.Entry<String, Object> entry : attributeMap.entrySet()) {
                factory.setAttribute(entry.getKey(), entry.getValue());
            }

            for (final Map.Entry<String, String> entry : featureMap.entrySet()) {
                factory.setFeature(entry.getKey(), "true".equalsIgnoreCase(entry.getValue()));
            }

    return map.keySpliterator();
  }

  @Override
  public boolean contains(@CheckForNull Object object) {
    return map.containsKey(object);
  }

  @Override
  K get(int index) {
    return map.entrySet().asList().get(index).getKey();
  }

  @Override
  public void forEach(Consumer<? super K> action) {
    checkNotNull(action);
    map.forEach((k, v) -> action.accept(k));
  }

  @Override