* @param <T> the element type
 * @see IndexedIterator
 */
public class Indexed<T> {

    /** The element. */
    private final T element;

    /** The index of the element. */
    private final int index;

    /**
     * Constructor.
     *
     * @param element the element
     * @param index the index of the element
     */
    public Indexed(final T element, final int index) {
        this.element = element;

        assertThat(it.hasNext(), is(true));

        final Indexed<String> indexed1 = it.next();
        assertThat(indexed1.getIndex(), is(0));
        assertThat(indexed1.getElement(), is("aaa"));

        final Indexed<String> indexed2 = it.next();
        assertThat(indexed2.getIndex(), is(1));
        assertThat(indexed2.getElement(), is("bbb"));

        final Indexed<String> indexed3 = it.next();
        assertThat(indexed3.getIndex(), is(2));

 *
 * List<String> list = ...;
 * for (Indexed<String> indexed : indexed(list)) {
 *     System.out.println(indexed.getIndex());
 *     System.out.println(indexed.getElement());
 * }
 * </pre>
 *
 * <pre>
 * import static org.codelibs.core.collection.IndexedIterator.*;
 * import static org.codelibs.core.io.LineIterator.*;
 *
 * BufferedReader reader = ...;
 * for (Indexed&lt;String&gt; indexed : indexed(iterable(reader))) {

        if (parameterTypes == null) {
            return desc;
        }
        final ParameterizedClassDesc[] parameterDescs = new ParameterizedClassDesc[parameterTypes.length];
        for (final Indexed<Type> parameterType : indexed(iterable(parameterTypes))) {
            parameterDescs[parameterType.getIndex()] = createParameterizedClassDesc(parameterType.getElement(), map);
        }
        desc.setArguments(parameterDescs);

    /**
     * Creates a new exception with specified details.
     *
     * @param message The message text, may be {@code null}.
     * @param collisions The POM files of the projects that collided, indexed by their g:a:v, may be {@code null}.
     */
    public DuplicateProjectException(String message, Map<String, List<File>> collisions) {
        super(message, (File) null);

     *
     * @param data        The content for which to calculate checksums, must not be {@code null}.
     * @param algorithms  The checksum algorithms to use, must not be {@code null}.
     * @return The calculated checksums, indexed by algorithms, never {@code null}.
     * @throws NullPointerException if passed in any parameter is {@code null}.
     */
    @Nonnull

)

// 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

     * Stores a document in the search index with the specified parameters and data.
     *
     * @param paramMap the data store parameters containing configuration and metadata
     * @param dataMap the document data to be indexed as key-value pairs
     */
    void store(DataStoreParams paramMap, Map<String, Object> dataMap);

    /**
     * Returns the total number of documents processed by this callback.
     *

    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);