* google.invalid}. This is the recommended method for determining whether a domain is potentially
   * an addressable host.
   *
   * <p>Note that this method is equivalent to {@link #hasRegistrySuffix()} because all registry
   * suffixes are public suffixes <i>and</i> all public suffixes have registry suffixes.
   *
   * @since 6.0
   */
  public boolean hasPublicSuffix() {