return new ClosingFuture<>(future);
  }

  /**
   * Starts a {@link ClosingFuture} pipeline with a {@link ListenableFuture}.
   *
   * <p>If {@code future} succeeds, its value will be closed (using {@code closingExecutor)}) when
   * the pipeline is done, even if the pipeline is canceled or fails.
   *

     * valueEquivalence.
     */

    @Override
    public V setValue(V newValue) {
      put(getKey(), newValue);
      return super.setValue(newValue); // done after put() so that it happens only if put() succeeds
    }
  }

  final class EntryIterator extends HashIterator<Entry<K, V>> {

    @Override
    public Entry<K, V> next() {
      return nextEntry();
    }
  }

  @WeakOuter

     * valueEquivalence.
     */

    @Override
    public V setValue(V newValue) {
      put(getKey(), newValue);
      return super.setValue(newValue); // done after put() so that it happens only if put() succeeds
    }
  }

  final class EntryIterator extends HashIterator<Entry<K, V>> {

    @Override
    public Entry<K, V> next() {
      return nextEntry();
    }
  }

  @WeakOuter

    Map<K, V> result;
    boolean success = false;
    try {
      @SuppressWarnings("unchecked") // safe since all keys extend K
      Map<K, V> map = (Map<K, V>) loader.loadAll(keys);
      result = map;
      success = true;
    } catch (UnsupportedLoadingOperationException e) {
      success = true;
      throw e;
    } catch (InterruptedException e) {

    Map<K, V> result;
    boolean success = false;
    try {
      @SuppressWarnings("unchecked") // safe since all keys extend K
      Map<K, V> map = (Map<K, V>) loader.loadAll(keys);
      result = map;
      success = true;
    } catch (UnsupportedLoadingOperationException e) {
      success = true;
      throw e;
    } catch (InterruptedException e) {

        requestBody.put("included_urls", includedUrls);
        requestBody.put("user_agent", "Mozilla/5.0");
        requestBody.put("depth", 0);
        requestBody.put("max_access_count", 2L); // Minimal: 1 success + 1 failure
        requestBody.put("num_of_thread", 1);
        requestBody.put("interval_time", 0); // No delay
        requestBody.put("boost", 100);
        requestBody.put("available", true);