return delegate().allowsSelfLoops();
  }

  @Override
  public ElementOrder<N> nodeOrder() {
    return delegate().nodeOrder();
  }

  @Override
  public ElementOrder<E> edgeOrder() {
    return delegate().edgeOrder();
  }

  @Override
  public Set<N> adjacentNodes(N node) {
    return delegate().adjacentNodes(node);
  }

  @Override
  public Set<N> predecessors(N node) {

	f, err := Open(path, flag, perm)
	if err != nil {
		return nil, err
	}

	if err = lockFile(syscall.Handle(f.Fd()), lockType); err != nil {
		f.Close()
		return nil, err
	}

	st, err := os.Stat(path)
	if err != nil {
		f.Close()
		return nil, err
	}

	if st.IsDir() {
		f.Close()
		return nil, &os.PathError{
			Op:   "open",
			Path: path,
			Err:  syscall.EISDIR,
		}

   * {@link Optional#absent} is returned.
   *
   * <p><b>Comparison to {@code java.util.Optional}:</b> this method is similar to Java 8's {@code
   * Optional.map}, except when {@code function} returns {@code null}. In this case this method
   * throws an exception, whereas the Java 8+ method returns {@code Optional.absent()}.
   *
   * @throws NullPointerException if the function returns {@code null}
   * @since 12.0
   */

			if iSubset == jSubset {
				if iPort == jPort {
					return iDirection < jDirection
				}
				return iPort < jPort
			}
			return iSubset < jSubset
		}
		return iName < jName
	})
	return clusters, nil
}

func safelyParseSubsetKey(key string) (model.TrafficDirection, string, host.Name, int) {
	if len(strings.Split(key, "|")) > 3 {
		return model.ParseSubsetKey(key)
	}
	name := host.Name(key)

    public NavigableSet<E> elementSet() {
      return new StandardElementSet();
    }

    @Override
    public Entry<E> firstEntry() {
      return standardFirstEntry();
    }

    @Override
    public Entry<E> lastEntry() {
      return standardLastEntry();
    }

    @Override
    public Entry<E> pollFirstEntry() {
      return standardPollFirstEntry();
    }

    @Override

        }
        return new String(outData);
    }

    /**
     * Base64でエンコードされたデータをデコードします。
     *
     * @param inData
     *            デコードするデータ
     * @return デコードされたデータ
     */
    public static byte[] decode(final String inData) {
        if (StringUtil.isEmpty(inData)) {
            return null;
        }
        final int num = inData.length() / 4 - 1;

            return new String(FileUtil.readBytes(outputFile), Constants.UTF_8_CHARSET);
        }
    }

    private Extractor getExtractor(final String ext) {
        return extractorMap.get(ext);
    }

    /**
     * @param extension
     * @return
     */
    private String getOutputExtension(final String extension) {
        final String outExt = extensionMap.get(extension);

@ElementTypesAreNonnullByDefault
public interface ListeningExecutorService extends ExecutorService {
  /**
   * @return a {@code ListenableFuture} representing pending completion of the task
   * @throws RejectedExecutionException {@inheritDoc}
   */
  @Override
  <T extends @Nullable Object> ListenableFuture<T> submit(Callable<T> task);

  /**
   * @return a {@code ListenableFuture} representing pending completion of the task

        Set<Entry<K, V>> entries) {
      return new ForwardingSet<Map.Entry<K, V>>() {
        @Override
        protected Set<Entry<K, V>> delegate() {
          return entries;
        }

        @Override
        public Iterator<Entry<K, V>> iterator() {
          return UnmodifiableEntry.transformEntries(super.iterator());
        }

        @Override

    }

    public int getCount() {
      return count.get();
    }

    public K getLastEvictedKey() {
      return lastNotification.getKey();
    }

    public V getLastEvictedValue() {
      return lastNotification.getValue();
    }

    public RemovalNotification<K, V> getLastNotification() {
      return lastNotification;
    }
  }

  /** No-op {@link RemovalListener}. */