*
     * @throws ExecutionException if {@code closingFuture} is a failed step
     * @throws CancellationException if the {@code closingFuture}'s future was cancelled
     * @throws IllegalArgumentException if {@code closingFuture} is not one of the futures passed to
     *     {@link #whenAllComplete(Iterable)} or {@link #whenAllComplete(Iterable)}

  public void testAllAsList_extensive() throws InterruptedException {
    runExtensiveMergerTest(Merger.allMerger);
  }

  @J2ktIncompatible
  @GwtIncompatible // threads
  public void testSuccessfulAsList_extensive() throws InterruptedException {
    runExtensiveMergerTest(Merger.successMerger);
  }

  public void testSuccessfulAsList() throws Exception {
    // Create input and output

  public void testAllAsList_extensive() throws InterruptedException {
    runExtensiveMergerTest(Merger.allMerger);
  }

  @J2ktIncompatible
  @GwtIncompatible // threads
  public void testSuccessfulAsList_extensive() throws InterruptedException {
    runExtensiveMergerTest(Merger.successMerger);
  }

  public void testSuccessfulAsList() throws Exception {
    // Create input and output

     * @param listener the response listener
     * @throws UnsupportedOperationException always thrown as this operation is not implemented
     */
    @Override
    public void searchView(org.opensearch.action.admin.indices.view.SearchViewAction.Request request,
            ActionListener<SearchResponse> listener) {
        throw new UnsupportedOperationException("Not implemented yet");
    }

    /**

      throw new UnsupportedOperationException();
    }

    @Override
    public void replaceAll(BiFunction<? super K, ? super V, ? extends V> function) {
      throw new UnsupportedOperationException();
    }

    @Override
    public @Nullable V putIfAbsent(K key, V value) {
      throw new UnsupportedOperationException();
    }

    @Override

    /** Returns the value. Does not block or throw exceptions. */
    @Nullable V get();

    /**
     * Waits for a value that may still be loading. Unlike get(), this method can block (in the case
     * of FutureValueReference).
     *
     * @throws ExecutionException if the loading thread throws an exception
     * @throws ExecutionError if the loading thread throws an error
     */

   *
   * <p>If the mapped keys contain duplicates, an {@code IllegalArgumentException} is thrown when
   * the collection operation is performed. (This differs from the {@code Collector} returned by
   * {@link java.util.stream.Collectors#toMap(java.util.function.Function,
   * java.util.function.Function) Collectors.toMap(Function, Function)}, which throws an {@code
   * IllegalStateException}.)
   *

    /** Returns the value. Does not block or throw exceptions. */
    @Nullable V get();

    /**
     * Waits for a value that may still be loading. Unlike get(), this method can block (in the case
     * of FutureValueReference).
     *
     * @throws ExecutionException if the loading thread throws an exception
     * @throws ExecutionError if the loading thread throws an error
     */

  static final int SMALL_MAX_SIZE = DRAIN_THRESHOLD * 5;

  TestLogHandler logHandler;

  @Override
  public void setUp() throws Exception {
    super.setUp();
    logHandler = new TestLogHandler();
    LocalCache.logger.addHandler(logHandler);
  }

  @Override
  public void tearDown() throws Exception {
    super.tearDown();
    LocalCache.logger.removeHandler(logHandler);
  }

  static final int SMALL_MAX_SIZE = DRAIN_THRESHOLD * 5;

  TestLogHandler logHandler;

  @Override
  public void setUp() throws Exception {
    super.setUp();
    logHandler = new TestLogHandler();
    LocalCache.logger.addHandler(logHandler);
  }

  @Override
  public void tearDown() throws Exception {
    super.tearDown();
    LocalCache.logger.removeHandler(logHandler);
  }