public Collection<V> values() {
        return parent.values();
    }

    @Override
    public Set<Entry<K, V>> entrySet() {
        // return original keys
        return parent.entrySet();
    }

    @Override
    public boolean equals(final Object o) {
        return parent.equals(o);
    }

    @Override
    public int hashCode() {
        return parent.hashCode();
    }

        if (fessConfig.isLdapAllowEmptyPermission()) {
            return true;
        }

        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        for (final String permission : ldapUser.getPermissions()) {
            if (!systemHelper.isUserPermission(permission)) {
                return true;
            }
        }
        return false;
    }

    /**

     * @param charsetName the charset name to check
     * @return true if the charset is supported, false otherwise
     */
    protected boolean isSupportedCharset(final String charsetName) {
        if (charsetName == null) {
            return false;
        }
        try {
            Charset.forName(charsetName);
        } catch (final Exception e) {
            return false;
        }
        return true;
    }

     * @return this session's UID
     */
    public int getUid() {
        return this.uid;
    }

    /**
     * @return this session's expiration time
     */
    public Long getExpiration() {
        return this.expiration > 0 ? this.expiration : null;
    }

    /**
     * @return this session's credentials
     */
    public CredentialsInternal getCredentials() {

     * @return the current builder
     */
    @Nonnull
    default MessageBuilder a(Object value) {
        return append(String.valueOf(value));
    }

    /**
     * Append newline to the message buffer.
     *
     * @return the current builder
     */
    @Nonnull
    default MessageBuilder newline() {
        return append(System.lineSeparator());
    }

    /**

        // because some comparator might throw NPE (e.g. the natural ordering).
        return false;
      }
    }
    try {
      return sortedDelegate.containsAll(targets);
    } catch (ClassCastException e) {
      return false;
    }
  }

  @Override
  public E first() {
    return sortedDelegate.first();
  }

  @Override
  public ImmutableSortedSet<E> headSet(E toElement) {

                    }
                    return result;
                default:
                    return 0;
            }
        }

        public StringItem getStringPart() {
            return stringPart;
        }

        public Item getDigitPart() {
            return digitPart;
        }

        @Override
        public int getType() {
            return COMBINATION_ITEM;
        }

    private OptionalEntity<CrawlingInfo> crawlingInfo;

    public String getId() {
        return asDocMeta().id();
    }

    public void setId(final String id) {
        asDocMeta().id(id);
    }

    public Long getVersionNo() {
        return asDocMeta().version();
    }

    public void setVersionNo(final Long version) {
        asDocMeta().version(version);
    }

        return hash;
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }

        if (obj instanceof AndArtifactFilter other) {
            return filters.equals(other.filters);
        } else {
            return false;
        }
    }

     *            An array of property names. Must not be {@literal null} or an empty array.
     * @return A {@link CopyOptions} with the specified property names to include in the operation.
     * @see CopyOptions#include(CharSequence...)
     */
    public static CopyOptions include(final CharSequence... propertyNames) {
        return new CopyOptions().include(propertyNames);
    }

    /**