}

    /**
     * Creates a bulk line for OpenSearch indexing from the given parameters.
     *
     * @param index the name of the OpenSearch index
     * @param type the type of the document (deprecated in newer versions of OpenSearch)
     * @param item the SuggestItem containing the data to be indexed
     * @return a string representing the bulk line for OpenSearch indexing

                    List<String> order = new ArrayList<>();
                    for (String s : insertionOrder) {
                      int index = order.indexOf(s);
                      if (index == -1) {
                        order.add(s);
                      } else {
                        order.add(index, s);
                      }
                    }
                    return order;
                  }
                })

        final String index = fessConfig.getIndexDocumentUpdateIndex();
        return deleteBySessionId(searchEngineClient, index, sessionId);
    }

    /**
     * Deletes all documents associated with the specified session ID from the given index.
     *
     * @param searchEngineClient the search engine client to use for deletion
     * @param index the index name to delete documents from

import org.opensearch.index.query.QueryBuilder;

import jakarta.annotation.PostConstruct;

/**
 * Query processor component that handles query filters and commands.
 * This class provides a pipeline for processing Lucene queries by applying
 * a chain of filters and executing registered query commands.
 *
 * <p>The processor maintains a map of query commands indexed by query class names

    // Here we know that:
    // * (to < from) and that both are valid indices.
    // * Everything with (index < to) should be kept.
    // * Everything with (to <= index < from) should be removed.
    // * The element with (index == from) should be kept.
    // * Everything with (index > from) has not been checked yet.

    // Check from the end of the list backwards (minimize expected cost of

   * limits.
   */
  fun encode(string: String): String? {
    var pos = 0
    val limit = string.length
    val result = Buffer()

    while (pos < limit) {
      var dot = string.indexOf('.', startIndex = pos)
      if (dot == -1) dot = limit

      if (!encodeLabel(string, pos, dot, result)) {
        // If we couldn't encode the label, give up.
        return null
      }

    }

    char encode(int bits) {
      return chars[bits];
    }

    boolean isValidPaddingStartPosition(int index) {
      return validPadding[index % charsPerChunk];
    }

    boolean canDecode(char ch) {
      return ch <= Ascii.MAX && decodabet[ch] != -1;
    }

    int decode(char ch) throws DecodingException {

  static final class ElementSet<E> extends ImmutableSet.Indexed<E> {
    private final List<Entry<E>> entries;
    // TODO(cpovirk): @Weak?
    private final Multiset<E> delegate;

    ElementSet(List<Entry<E>> entries, Multiset<E> delegate) {
      this.entries = entries;
      this.delegate = delegate;
    }

    @Override
    E get(int index) {
      return entries.get(index).getElement();
    }

    @Override

    return false
  }
  for (a in this) {
    for (b in other) {
      if (comparator.compare(a, b) == 0) {
        return true
      }
    }
  }
  return false
}

internal fun Array<String>.indexOf(
  value: String,
  comparator: Comparator<String>,
): Int = indexOfFirst { comparator.compare(it, value) == 0 }

@Suppress("UNCHECKED_CAST")
internal fun Array<String>.concat(value: String): Array<String> {

        return client.index(request);
    }

    /**
     * Indexes a document asynchronously with a callback.
     *
     * @param request  the index request
     * @param listener the response listener
     */
    @Override
    public void index(final IndexRequest request, final ActionListener<IndexResponse> listener) {
        client.index(request, listener);