* <pre>{@code
   * NavigableMap<K, V> map = synchronizedNavigableMap(new TreeMap<K, V>());
   * NavigableMap<K, V> map2 = map.subMap(foo, false, bar, true);
   *
   * // Needn't be in synchronized block
   * NavigableSet<K> set2 = map2.descendingKeySet();
   *
   * synchronized (map) { // Synchronizing on map, not map2 or set2!
   *   Iterator<K> it = set2.iterator(); // Must be in synchronized block
   *   while (it.hasNext()) {

   * <pre>{@code
   * NavigableMap<K, V> map = synchronizedNavigableMap(new TreeMap<K, V>());
   * NavigableMap<K, V> map2 = map.subMap(foo, false, bar, true);
   *
   * // Needn't be in synchronized block
   * NavigableSet<K> set2 = map2.descendingKeySet();
   *
   * synchronized (map) { // Synchronizing on map, not map2 or set2!
   *   Iterator<K> it = set2.iterator(); // Must be in synchronized block
   *   while (it.hasNext()) {

  /**
   * <a href="https://tools.ietf.org/html/rfc3745">JP2K image format</a>.
   *
   * @since 28.1
   */
  public static final MediaType JP2K = createConstant(IMAGE_TYPE, "jp2");

  /* audio types */
  public static final MediaType MP4_AUDIO = createConstant(AUDIO_TYPE, "mp4");
  public static final MediaType MPEG_AUDIO = createConstant(AUDIO_TYPE, "mpeg");