}

  /**
   * A collection of several futures, covering cancellation, success, and failure (both {@link
   * ExecutionException} and {@link RuntimeException}), both immediate and delayed. We use each
   * possible pair of these futures in {@link FuturesTest#runExtensiveMergerTest}.
   *
   * <p>Each test requires a new {@link TestFutureBatch} because we need new delayed futures each

  }

  /**
   * A collection of several futures, covering cancellation, success, and failure (both {@link
   * ExecutionException} and {@link RuntimeException}), both immediate and delayed. We use each
   * possible pair of these futures in {@link FuturesTest#runExtensiveMergerTest}.
   *
   * <p>Each test requires a new {@link TestFutureBatch} because we need new delayed futures each

    return new TransformedEntriesNavigableMap<>(fromMap, transformer);
  }

  /**
   * A transformation of the value of a key-value pair, using both key and value as inputs. To apply
   * the transformation to a map, use {@link Maps#transformEntries(Map, EntryTransformer)}.
   *
   * @param <K> the key type of the input and output entries

        newState);
  }

  private boolean compareAndUpdateState(State oldState, State newState) {
    return state.compareAndSet(oldState, newState);
  }

  // TODO(dpb): Should we use a pair of ArrayLists instead of an IdentityHashMap?
  private static final class CloseableList extends IdentityHashMap<Closeable, Executor>
      implements Closeable {