*
   * <p>The type specification is {@code <C extends Comparable>}, instead of the technically correct
   * {@code <C extends Comparable<? super C>>}, to support legacy types from before Java 5.
   *
   * <p><b>Java 8+ users:</b> use {@link Comparator#naturalOrder} instead.
   */
  @GwtCompatible(serializable = true)
  @SuppressWarnings({"unchecked", "rawtypes"})

   * java.nio.charset.StandardCharsets#ISO_8859_1} instead.
   *
   */
  public static final Charset ISO_8859_1 = Charset.forName("ISO-8859-1");

  /**
   * UTF-8: eight-bit UCS Transformation Format.
   *
   * <p><b>Java 7+ users:</b> this constant should be treated as deprecated; use {@link
   * java.nio.charset.StandardCharsets#UTF_8} instead.
   *
   */

   * this method returns a {@link List}, instead of the {@link java.util.Collection} specified in
   * the {@link Multimap} interface.
   */
  @Override
  List<V> get(@ParametricNullness K key);

  /**
   * {@inheritDoc}
   *
   * <p>Because the values for a given key may have duplicates and follow the insertion ordering,
   * this method returns a {@link List}, instead of the {@link java.util.Collection} specified in

   * can use {@link com.google.common.collect.Maps#asConverter Maps.asConverter} instead to get a
   * function that also supports reverse conversion.
   *
   * <p><b>Java 8+ users:</b> if you are okay with {@code null} being returned for an unrecognized
   * key (instead of an exception being thrown), you can use the method reference {@code map::get}
   * instead.
   */

   * {@link Set}, instead of the {@link java.util.Collection} specified in the {@link Multimap}
   * interface.
   */
  @Override
  Set<V> get(@ParametricNullness K key);

  /**
   * {@inheritDoc}
   *
   * <p>Because a {@code SetMultimap} has unique values for a given key, this method returns a
   * {@link Set}, instead of the {@link java.util.Collection} specified in the {@link Multimap}

  @CheckForNull
  public B put(TypeToken<? extends @NonNull B> key, @ParametricNullness B value) {
    throw new UnsupportedOperationException("Please use putInstance() instead.");
  }

  /**
   * Not supported. Use {@link #putInstance} instead.
   *
   * @deprecated unsupported operation
   * @throws UnsupportedOperationException always
   */
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")

   * can use {@link com.google.common.collect.Maps#asConverter Maps.asConverter} instead to get a
   * function that also supports reverse conversion.
   *
   * <p><b>Java 8+ users:</b> if you are okay with {@code null} being returned for an unrecognized
   * key (instead of an exception being thrown), you can use the method reference {@code map::get}
   * instead.
   */

    }

    /**
     * Mimics the pre-Maven 4 "selected projects" list.
     * @deprecated Use {@link #getRequiredActiveProjectSelectors()} and {@link #getOptionalActiveProjectSelectors()}
     * instead.
     */
    @Deprecated
    public List<String> getSelectedProjects() {
        return Collections.unmodifiableList(new ArrayList<>(getProjectSelectors(pa -> pa.active)));
    }

    /**

     * readable name.
     */
    @CanIgnoreReturnValue
    public ToStringHelper addValue(@CheckForNull Object value) {
      return addHolder(value);
    }

    /**
     * Adds an unnamed value to the formatted output.
     *
     * <p>It is strongly encouraged to use {@link #add(String, boolean)} instead and give value a
     * readable name.

   * <p><b>Java 8+ users:</b> use {@link Integer#toUnsignedString(int)} instead.
   */
  public static String toString(int x) {
    return toString(x, 10);
  }

  /**
   * Returns a string representation of {@code x} for the given radix, where {@code x} is treated as
   * unsigned.
   *
   * <p><b>Java 8+ users:</b> use {@link Integer#toUnsignedString(int, int)} instead.
   *
   * @param x the value to convert to a string.