@Override
    ImmutableList<E> createAsList() {
      return new ImmutableAsList<E>() {
        @Override
        public E get(int index) {
          return Indexed.this.get(index);
        }

        @Override
        Indexed<E> delegateCollection() {
          return Indexed.this;
        }

        // redeclare to help optimizers with b/310253115
        @SuppressWarnings("RedundantOverride")

        }
        return value;
    }

    /**
     * Creates a new index with default settings.
     *
     * @param index     the index configuration name
     * @param indexName the actual index name to create
     * @return true if the index was created successfully, false otherwise
     */
    public boolean createIndex(final String index, final String indexName) {

  var index = 0
  val result = mutableListOf<Mapping>()

  while (index < mappings.size) {
    val mapping = mappings[index]
    val type = canonicalizeType(mapping.type)
    val mappedTo = mapping.mappedTo

    var unionWith: Mapping = mapping
    index++

    while (index < mappings.size) {
      val next = mappings[index]

			fi := metadata[index]
			// Assign index when index is initialized
			if fi.Erasure.Index == 0 {
				fi.Erasure.Index = index + 1
			}

			if !fi.IsValid() {
				return errFileCorrupt
			}
			resp, err := disks[index].RenameData(ctx, srcBucket, srcEntry, fi, dstBucket, dstEntry, RenameOptions{})
			if err != nil {
				return err
			}
			diskVersions[index] = resp.Sign

        if (testToken != null) {
            logger.info("Token: {}", testToken);
            return testToken;
        }

        given().contentType("application/json")
                .body("{\"index\":{\"_index\":\"fess_config.access_token\",\"_id\":\"" + DEFAULT_TEST_TOKEN_ID

        }

        public E get(final int index) {
            return parent.get(index);
        }

        public E set(final int index, final E element) {
            return parent.set(index, element);
        }

        public void add(final int index, final E element) {
            parent.add(index, element);
        }

        public E remove(final int index) {
            return parent.remove(index);

        CombinationItem(String value) {
            int index = 0;
            for (int i = 0; i < value.length(); i++) {
                char c = value.charAt(i);
                if (Character.isDigit(c)) {
                    index = i;
                    break;
                }
            }

            stringPart = new StringItem(value.substring(0, index), true);

 * This class manages the process of updating the search index with documents from
 * data stores, including bulk operations, document transformation, and error handling.
 */
public class IndexUpdateCallbackImpl implements IndexUpdateCallback {
    private static final Logger logger = LogManager.getLogger(IndexUpdateCallbackImpl.class);

    /**
     * Default constructor for index update callback implementation.

 * custom data transformation and enrichment during the crawling process.
 *
 * <p>It supports pluggable ingesters that can modify the result data
 * before it is stored in the search index.</p>
 */
public class FessResponseProcessor extends DefaultResponseProcessor {
    /**
     * Default constructor.
     */
    public FessResponseProcessor() {
        super();
    }

        this.crawlingExecutionInterval = crawlingExecutionInterval;
    }

    /**
     * Sets the thread priority for index updater operations.
     *
     * @param indexUpdaterPriority The index updater thread priority
     */
    public void setIndexUpdaterPriority(final int indexUpdaterPriority) {
        this.indexUpdaterPriority = indexUpdaterPriority;
    }