*
   * @param className the name of the instance type
   * @since 18.0 (since 7.0 as {@code Objects.toStringHelper}).
   */
  public static ToStringHelper toStringHelper(String className) {
    return new ToStringHelper(className);
  }

  /**
   * Support class for {@link MoreObjects#toStringHelper}.
   *
   * @author Jason Lee
   * @since 18.0 (since 2.0 as {@code Objects.ToStringHelper}).
   */

   * custom message otherwise.
   *
   * <p>See {@link #verify(boolean, String, Object...)} for details.
   *
   * @since 23.1 (varargs overload since 17.0)
   */
  public static void verify(
      boolean expression, String errorMessageTemplate, char p1) {
    if (!expression) {
      throw new VerifyException(lenientFormat(errorMessageTemplate, p1));

 *
 * @author Charles Fry
 * @since 10.0
 */
@GwtIncompatible
public abstract class ForwardingCache<K, V> extends ForwardingObject implements Cache<K, V> {

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

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

  /**
   * @since 11.0
   */
  @Override
  public @Nullable V getIfPresent(Object key) {

   *
   * @since 7.0
   */
  protected boolean standardIsEmpty() {
    return !iterator().hasNext();
  }

  /**
   * A sensible definition of {@link #toString} in terms of {@link #iterator}. If you override
   * {@link #iterator}, you may wish to override {@link #toString} to forward to this
   * implementation.
   *
   * @since 7.0
   */
  protected String standardToString() {

   *
   * @since 7.0
   */
  protected boolean standardIsEmpty() {
    return !iterator().hasNext();
  }

  /**
   * A sensible definition of {@link #toString} in terms of {@link #iterator}. If you override
   * {@link #iterator}, you may wish to override {@link #toString} to forward to this
   * implementation.
   *
   * @since 7.0
   */
  protected String standardToString() {

   *
   * @since 8.0
   */
  public static final byte SP = 32;

  /**
   * Alternate name for {@link #SP}.
   *
   * @since 8.0
   */
  public static final byte SPACE = 32;

  /**
   * Delete: This character is used primarily to "erase" or "obliterate" erroneous or unwanted
   * characters in perforated tape.
   *
   * @since 8.0
   */

   *
   * @since 8.0
   */
  public static final byte SP = 32;

  /**
   * Alternate name for {@link #SP}.
   *
   * @since 8.0
   */
  public static final byte SPACE = 32;

  /**
   * Delete: This character is used primarily to "erase" or "obliterate" erroneous or unwanted
   * characters in perforated tape.
   *
   * @since 8.0
   */

     * @since 3.0-alpha-3
     */
    void setAuthentication(Authentication authentication);

    /**
     * @return repository authentication
     * @since 3.0-alpha-3
     */
    Authentication getAuthentication();

    /**
     * @param proxy proxy
     * @since 3.0-alpha-3
     */
    void setProxy(Proxy proxy);

    /**
     * @since 3.0-alpha-3

   * values</a>.
   *
   * @since 15.0
   */
  public static final MediaType TSV_UTF_8 = createConstantUtf8(TEXT_TYPE, "tab-separated-values");

  public static final MediaType VCARD_UTF_8 = createConstantUtf8(TEXT_TYPE, "vcard");

  /**
   * UTF-8 encoded <a href="https://en.wikipedia.org/wiki/Wireless_Markup_Language">Wireless Markup
   * Language</a>.
   *
   * @since 13.0
   */

   *
   * @since 7.0
   */
  protected Iterator<E> standardIterator() {
    return listIterator();
  }

  /**
   * A sensible default implementation of {@link #listIterator()}, in terms of {@link
   * #listIterator(int)}. If you override {@link #listIterator(int)}, you may wish to override
   * {@link #listIterator()} to forward to this implementation.
   *
   * @since 7.0
   */