private Strings() {}

  /**
   * Returns the given string if it is non-null; the empty string otherwise.
   *
   * @param string the string to test and possibly return
   * @return {@code string} itself if it is non-null; {@code ""} if it is null
   */
  public static String nullToEmpty(@Nullable String string) {
    return Platform.nullToEmpty(string);
  }

  /**

     *
     * @return the {@link Pattern} instance for XML tag matching
     */
    @Override
    protected Pattern getTagPattern() {
        return xmlTagPattern;
    }

    /**
     * Returns the XML encoding pattern.
     * @return The XML encoding pattern.
     */
    public Pattern getXmlEncodingPattern() {
        return xmlEncodingPattern;
    }

    /**

     */
    public String getToken() {
        return token;
    }

    /**
     * Returns the segmentation.
     *
     * @return The segmentation.
     */
    public String getSegmentation() {
        return segmentation;
    }

    /**
     * Returns the reading.
     *
     * @return The reading.
     */
    public String getReading() {
        return reading;

		e.AllTierStats = e.AllTierStats.clone()
	}
	return e
}

// find a path in the cache.
// Returns nil if not found.
func (d *dataUsageCache) find(path string) *dataUsageEntry {
	due, ok := d.Cache[hashPath(path).Key()]
	if !ok {
		return nil
	}
	return &due
}

// isCompacted returns whether an entry is compacted.
// Returns false if not found.

   * Returns a view of the supplied {@code iterator} that removes each element from the supplied
   * {@code iterator} as it is returned.
   *
   * <p>The provided iterator must support {@link Iterator#remove()} or else the returned iterator
   * will fail on the first call to {@code next}. The returned {@link Iterator} is also not
   * thread-safe.
   *
   * @param iterator the iterator to remove and return elements from

   * implementing your own stats collector.
   */
  public long requestCount() {
    return saturatedAdd(hitCount, missCount);
  }

  /** Returns the number of times {@link Cache} lookup methods have returned a cached value. */
  public long hitCount() {
    return hitCount;
  }

  /**
   * Returns the ratio of cache requests which were hits. This is defined as {@code hitCount /

     * </p>
     *
     * @param type
     *            the type to analyze
     * @return the element type of the set, or null if not a parameterized set
     */
    public static Type getElementTypeOfSet(final Type type) {
        if (!isTypeOf(type, Set.class)) {
            return null;
        }
        return getGenericParameter(type, 0);
    }

    /**

    /**
     * Returns the filter index name.
     * @return The filter index name.
     */
    public String getFilterIndex() {
        return filterIndex;
    }

    /**
     * Sets the filter index name.
     * @param filterIndex The filter index name.
     */
    public void setFilterIndex(final String filterIndex) {
        this.filterIndex = filterIndex;
    }

    /**

     * Returns whether the method is <code>public</code>.
     *
     * @param method
     *            The method. Cannot be {@literal null}
     * @return <code>public</code> if the method is public
     */
    public static boolean isPublic(final Method method) {
        assertArgumentNotNull("method", method);

        return Modifier.isPublic(method.getModifiers());
    }

    /**

	// if it has a "format.json" then is it correct "format.json" or not.
	IsOnline() bool

	// Returns the last time this disk (re)-connected
	LastConn() time.Time

	// Indicates if disk is local or not.
	IsLocal() bool

	// Returns hostname if disk is remote.
	Hostname() string

	// Returns the entire endpoint.
	Endpoint() Endpoint