static class FactoryMethodAcceptsNull {

    final String name;

    private FactoryMethodAcceptsNull(String name) {
      this.name = name;
    }

    static FactoryMethodAcceptsNull create(@Nullable String name) {
      return new FactoryMethodAcceptsNull(name);
    }
  }

  static class FactoryMethodDoesNotAcceptNull {

    final String name;

   */
  private final Equivalence<? super T> equivalence;

  private final String relationshipName;
  private final String hashName;
  private final ItemReporter itemReporter;
  private final List<ImmutableList<T>> groups = new ArrayList<>();

  RelationshipTester(
      Equivalence<? super T> equivalence,
      String relationshipName,
      String hashName,
      ItemReporter itemReporter) {

 */
@Deprecated
public interface ArtifactRepository {
    String pathOf(Artifact artifact);

    String pathOfRemoteRepositoryMetadata(ArtifactMetadata artifactMetadata);

    String pathOfLocalRepositoryMetadata(ArtifactMetadata metadata, ArtifactRepository repository);

    String getUrl();

    void setUrl(String url);

    String getBasedir();

    default Path getBasedirPath() {

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final String username = fessConfig.getFesenUsername();
        final String password = fessConfig.getFesenPassword();
        if (StringUtil.isNotBlank(username) && StringUtil.isNotBlank(password)) {
            final String value = username + ":" + password;

            ArtifactRepository repository,
            File destination,
            String remotePath,
            TransferListener downloadMonitor,
            String checksumPolicy,
            boolean force)
            throws TransferFailedException, ResourceDoesNotExistException {
        String protocol = repository.getProtocol();

        Wagon wagon;

        try {

     */
    public OpenSearchAccessResultData(final Map<String, Object> src) {
        setTransformerName((String) src.get(TRANSFORMER_NAME));
        setEncoding((String) src.get(ENCODING));
        final String dataStr = (String) src.get(DATA);
        if (dataStr != null) {
            try {
                setData(Base64Util.decode(dataStr));
            } catch (final Exception e) {

     */
    public static final String METHOD = "method";

    /**
     * Field name for URL.
     */
    public static final String URL = "url";

    /**
     * Field name for parent URL.
     */
    public static final String PARENT_URL = "parentUrl";

    /**
     * Field name for depth.
     */
    public static final String DEPTH = "depth";

    /**

                            .toArray(n -> new String[n])));
            final PermissionHelper permissionHelper = ComponentUtil.getPermissionHelper();
            entity.setPermissions(split(form.permissions, "\n").get(stream -> stream.map(s -> permissionHelper.encode(s))
                    .filter(StringUtil::isNotBlank)
                    .distinct()
                    .toArray(n -> new String[n])));

          <name>modelVersion</name>
          <version>1.1.0+</version>
          <type>String</type>
          <description>The version of the underlying metadata model.</description>
        </field>
        <field>
          <name>groupId</name>
          <version>1.0.0+</version>
          <type>String</type>

     * @return an OptionalThing containing the pipeline string if found, or empty if not found or blank
     */
    public OptionalThing<String> getPipeline(final String configId) {
        final CrawlingConfig config = getCrawlingConfig(configId);
        if (config == null) {
            return OptionalThing.empty();
        }
        final String pipeline = config.getConfigParameterMap(ConfigName.CONFIG).get(Config.PIPELINE);