switch mt {
	case CounterMT:
		return "counter"
	case GaugeMT:
		return "gauge"
	case HistogramMT:
		return "histogram"
	default:
		return "*unknown*"
	}
}

func (mt MetricType) toProm() prometheus.ValueType {
	switch mt {
	case CounterMT:
		return prometheus.CounterValue
	case GaugeMT:
		return prometheus.GaugeValue
	case HistogramMT:
		return prometheus.CounterValue
	default:

     */
    @Override
    public void close() throws Exception {
        client.close();
    }

    /**
     * Returns the underlying CrawlerClient.
     * @return The CrawlerClient instance.
     */
    public CrawlerClient getCrawlerClient() {
        return client;
    }

    /**
     * Sets the underlying CrawlerClient.
     * @param client The CrawlerClient instance to set.
     */

                return s;
            }
            final int v = Integer.parseInt(matcher.group(1));
            if ("-".equals(matcher.group(2))) {
                if (version >= v) {
                    return matcher.group(3);
                }
            } else if (v == version) {
                return matcher.group(3);
            }
            return null;
        }).filter(s -> s != null).toArray(n -> new String[n]);

	connection *grid.Connection
}

// IsOnline - returns whether REST client failed to connect or not.
func (c *lockRESTClient) IsOnline() bool {
	return c.connection.State() == grid.StateConnected
}

// Not a local locker
func (c *lockRESTClient) IsLocal() bool {
	return false
}

// Close - marks the client as closed.
func (c *lockRESTClient) Close() error {
	return nil
}

		if err != nil {
			return nil, err
		}
		return objectKey[:], nil
	case crypto.SSEC:
		sealedKey, err := crypto.SSEC.ParseMetadata(metadata)
		if err != nil {
			return nil, err
		}
		var objectKey crypto.ObjectKey
		if err = objectKey.Unseal(key, sealedKey, crypto.SSEC.String(), bucket, object); err != nil {
			return nil, err
		}
		return objectKey[:], nil
	default:
		return nil, errObjectTampered
	}

	// use mtime < t+1s instead of mtime <= t to check for unmodified.
	return !objTime.Before(givenTime.Add(1 * time.Second))
}

// canonicalizeETag returns ETag with leading and trailing double-quotes removed,
// if any present
func canonicalizeETag(etag string) string {
	return etagRegex.ReplaceAllString(etag, "$1")
}

// isETagEqual return true if the canonical representations of two ETag strings

	setIndex  int
	poolIndex int

	// getDisks returns list of storageAPIs.
	getDisks func() []StorageAPI

	// getLockers returns list of remote and local lockers.
	getLockers func() ([]dsync.NetLocker, string)

	// getEndpoints returns list of endpoint belonging this set.
	// some may be local and some remote.
	getEndpoints func() []Endpoint

	// getEndpoints returns list of endpoint strings belonging this set.

public interface UpgradeOptions extends Options {
    /**
     * Returns the list of upgrade goals to be executed.
     * These goals can include operations like "check", "dependencies", "plugins", etc.
     *
     * @return an {@link Optional} containing the list of goals, or empty if not specified
     */
    @Nonnull
    Optional<List<String>> goals();

    /**
     * Returns the target POM model version for upgrades.

    T value = (T) ArbitraryInstances.get(rawType);
    if (value != null) {
      return value;
    }
    if (rawType.isInterface()) {
      return new SerializableDummyProxy(this).newProxy(type);
    }
    return null;
  }

  private static <T> T createInstance(Invokable<?, ? extends T> factory, List<?> args)

  /** Returns the lifecycle state of the service. */
  State state();

  /**
   * If the service is {@linkplain State#STARTING starting} or {@linkplain State#RUNNING running},
   * this initiates service shutdown and returns immediately. If the service is {@linkplain
   * State#NEW new}, it is {@linkplain State#TERMINATED terminated} without having been started nor
   * stopped. If the service has already been stopped, this method returns immediately without