* {@link #entrySet}, you may wish to override {@link #toString} to forward to this
   * implementation.
   *
   * @since 7.0
   */
  @Override
  protected String standardToString() {
    return entrySet().toString();
  }

   * #entrySet}. If you override {@link #entrySet}, you may wish to override {@link #toString} to
   * forward to this implementation.
   *
   * @since 7.0
   */
  protected String standardToString() {
    return Maps.toStringImpl(this);
  }