}
    },
    ALL_LEFT {
      @Override
      Optional<BinaryNode> createTree(int size, Random rng) {
        Optional<BinaryNode> root = Optional.absent();
        for (int i = 0; i < size; i++) {
          root = Optional.of(new BinaryNode(rng.nextInt(), root, Optional.<BinaryNode>absent()));
        }
        return root;
      }
    },
    ALL_RIGHT {
      @Override

  @Override
  public Set<T> asSet() {
    return Collections.emptySet();
  }

  @Override
  public <V> Optional<V> transform(Function<? super T, V> function) {
    checkNotNull(function);
    return Optional.absent();
  }

  @Override
  public boolean equals(@Nullable Object obj) {
    return this == obj;
  }

  @Override
  public int hashCode() {
    return 0x79a31aac;
  }

  @Override

        systemHelper = new SystemHelper() {
            @Override
            protected void parseProjectProperties(final Path propPath) {
                super.parseProjectProperties(propFile.toPath());
            }

            @Override
            public void updateSystemProperties() {
            }

            @Override
            protected Map<String, String> getEnvMap() {
                return envMap;

  protected ForwardingMapEntry() {}

  @Override
  protected abstract Entry<K, V> delegate();

  @Override
  @ParametricNullness
  public K getKey() {
    return delegate().getKey();
  }

  @Override
  @ParametricNullness
  public V getValue() {
    return delegate().getValue();
  }

  @Override
  @ParametricNullness
  @CanIgnoreReturnValue

        }

        @Override
        public int size() {
            return parent.size();
        }

        @Override
        public boolean isEmpty() {
            return parent.isEmpty();
        }

        @Override
        public boolean contains(final Object o) {
            return parent.contains(o);
        }

        @Override
        public Iterator<E> iterator() {

      renameFaults.remove(file)
    }
  }

  @Throws(IOException::class)
  override fun atomicMove(
    source: Path,
    target: Path,
  ) {
    if (renameFaults.contains(source) || renameFaults.contains(target)) throw IOException("boom!")
    super.atomicMove(source, target)
  }

  @Throws(IOException::class)
  override fun delete(
    path: Path,
    mustExist: Boolean,
  ) {

  /** Constructor for use by subclasses. */
  protected ForwardingConcurrentMap() {}

  @Override
  protected abstract ConcurrentMap<K, V> delegate();

  @CanIgnoreReturnValue
  @Override
  public @Nullable V putIfAbsent(K key, V value) {
    return delegate().putIfAbsent(key, value);
  }

  @CanIgnoreReturnValue
  @Override
  public boolean remove(@Nullable Object key, @Nullable Object value) {

      this.delay = delay;
    }

    @Override
    protected void doStart() {
      new Thread() {
        @Override
        public void run() {
          Uninterruptibles.sleepUninterruptibly(delay, MILLISECONDS);
          notifyStarted();
        }
      }.start();
    }

    @Override
    protected void doStop() {
      new Thread() {
        @Override
        public void run() {

        @Override
        public SID getDomainSid() {
            return null;
        }

        @Override
        public int getRid() {
            return 0;
        }

        @Override
        public String toDisplayString() {
            return getDomainName() + "\\" + getAccountName();
        }

        @Override
        public String getAccountName() {

        }
    }

    @Override
    public void rdmaRead(RdmaMemoryRegion localRegion, long remoteAddress, int remoteKey, int length) throws IOException {
        // TCP fallback doesn't support real RDMA read
        throw new UnsupportedOperationException("RDMA read not supported by TCP fallback");
    }

    @Override