protected final AtomicBoolean forceStop = new AtomicBoolean(false);

    /** A cache for language items. */
    protected LoadingCache<String, List<Map<String, String>>> langItemsCache;

    /** The encoding for filtering paths. */
    protected String filterPathEncoding;

    /** An array of supported language codes. */
    protected String[] supportedLanguages;

 *
 * <p>This class acts as a facade, delegating to internal operation classes for the actual work:
 * <ul>
 * <li>{@code IndexingOperations} - Core indexing functionality with bad word filtering</li>
 * <li>{@code DeletionOperations} - Deletion by ID, query, or kind</li>
 * <li>{@code WordManagementOperations} - Bad word and elevate word management</li>

	filteredResults := o.gatherResults(listCtx, filterCh)
	var wg sync.WaitGroup
	wg.Add(1)
	var listErr error

	go func(o listPathOptions) {
		defer wg.Done()
		if o.Lifecycle == nil {
			// No filtering ahead, ask drives to stop
			// listing exactly at a specific limit.
			o.StopDiskAtLimit = true
		}
		listErr = z.listMerged(listCtx, o, filterCh)
		o.debugln("listMerged returned with", listErr)
	}(*o)

        : new FilteredEntryBiMap<K, V>(unfiltered, entryPredicate);
  }

  /**
   * Support {@code clear()}, {@code removeAll()}, and {@code retainAll()} when filtering a filtered
   * map.
   */
  private static <K extends @Nullable Object, V extends @Nullable Object> Map<K, V> filterFiltered(
      AbstractFilteredMap<K, V> map, Predicate<? super Entry<K, V>> entryPredicate) {

                * Serialization: you could return an arbitrary object and the
                    `response_model` would be used to serialize that object into the
                    corresponding JSON.
                * Filtering: the JSON sent to the client will only contain the data
                    (fields) defined in the `response_model`. If you returned an object
                    that contains an attribute `password` but the `response_model` does

//   encryption:
//     type: sse-s3 # valid values are sse-s3 and sse-kms
//     key: <new-kms-key> # valid only for sse-kms
//     context: <new-kms-key-context> # valid only for sse-kms
// # optional flags based filtering criteria
// # for all objects
// flags:
//   filter:
//     newerThan: "7d" # match objects newer than this value (e.g. 7d10h31s)
//     olderThan: "7d" # match objects older than this value (e.g. 7d10h31s)

    //                                                                      ==============
    /**
     * Displays the scheduler management index page.
     *
     * @param form the search form for filtering
     * @return HTML response for the scheduler list page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index(final SearchForm form) {
        return asListHtml();
    }

	FastGetObjInfo bool // Only for S3 Head/Get Object calls for now
	NoAuditLog     bool // Only set for decom, rebalance, to avoid double audits.
}

// WalkOptions provides filtering, marker and other Walk() specific options.
type WalkOptions struct {
	Filter       func(info FileInfo) bool // return WalkFilter returns 'true/false'
	Marker       string                   // set to skip until this object

        : new FilteredEntryBiMap<K, V>(unfiltered, entryPredicate);
  }

  /**
   * Support {@code clear()}, {@code removeAll()}, and {@code retainAll()} when filtering a filtered
   * map.
   */
  private static <K extends @Nullable Object, V extends @Nullable Object> Map<K, V> filterFiltered(
      AbstractFilteredMap<K, V> map, Predicate<? super Entry<K, V>> entryPredicate) {

    // Search Execute
    // ==============
    /**
     * Displays the search list management index page.
     *
     * @param form the list form for filtering
     * @return HTML response for the search list page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse index(final ListForm form) {
        saveToken();