}
  }

  abstract static class Indexed<E> extends ImmutableSet<E> {
    abstract E get(int index);

    @Override
    public UnmodifiableIterator<E> iterator() {
      return asList().iterator();
    }

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

)

// a bucketMetacache keeps track of all caches generated
// for a bucket.
type bucketMetacache struct {
	// Name of bucket
	bucket string

	// caches indexed by id.
	caches map[string]metacache
	// cache ids indexed by root paths
	cachesRoot map[string][]string `msg:"-"`

	// Internal state
	mu      sync.RWMutex `msg:"-"`
	updated bool         `msg:"-"`
}

type deleteAllStorager interface {

/**
 * Executable class for generating thumbnails for indexed documents.
 * This class provides a command-line interface for thumbnail generation tasks.
 */
public class ThumbnailGenerator {

    private static final Logger logger = LogManager.getLogger(ThumbnailGenerator.class);

    /**
     * OpenSearch client for accessing indexed documents.
     */
    @Resource

    private Pac pac;

    /**
     * Constructs KerberosPacAuthData from token bytes.
     *
     * @param token the PAC token bytes
     * @param keys map of Kerberos keys indexed by key type
     * @throws PACDecodingException if PAC decoding fails
     */
    public KerberosPacAuthData(byte[] token, Map<Integer, KerberosKey> keys) throws PACDecodingException {
        this.pac = new Pac(token, keys);

    @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")

          S extends MapWithIndexSpliterator<F, R, S>>
      implements Spliterator<R> {
    final F fromSpliterator;
    long index;

    MapWithIndexSpliterator(F fromSpliterator, long index) {
      this.fromSpliterator = fromSpliterator;
      this.index = index;
    }

    abstract S createSplit(F from, long i);

    @Override
    public @Nullable S trySplit() {

    private List<KerberosAuthData> authorizations;

    /**
     * Constructs KerberosRelevantAuthData from token bytes.
     *
     * @param token the authorization data token
     * @param keys map of Kerberos keys indexed by key type
     * @throws PACDecodingException if decoding fails
     */
    public KerberosRelevantAuthData(byte[] token, Map<Integer, KerberosKey> keys) throws PACDecodingException {
        ASN1Sequence authSequence;

    public Set<K> keySet() {
      return keyIndex.keySet();
    }

    K getKey(int index) {
      return keyIndex.keySet().asList().get(index);
    }

    abstract String getKeyRole();

    @ParametricNullness
    abstract V getValue(int index);

    @ParametricNullness
    abstract V setValue(int index, @ParametricNullness V newValue);

    @Override
    public int size() {

            logger.info("Parsing words from indexed documents.");
            suggestHelper.indexFromDocuments(ret -> {
                logger.info("Success indexing from documents.");
                latch.countDown();
            }, t -> {
                logger.error("Failed to update suggest index.", t);
                exitCode.set(1);
                latch.countDown();
            });

	// map of heal path to heal sequence
	healSeqMap map[string]*healSequence // Indexed by endpoint
	// keep track of the healing status of disks in the memory
	//   false: the disk needs to be healed but no healing routine is started
	//    true: the disk is currently healing
	healLocalDisks map[Endpoint]bool
	healStatus     map[string]healingTracker // Indexed by disk ID
}

// newHealState - initialize global heal state management