public static final MediaType I_CALENDAR_UTF_8 = createConstantUtf8(TEXT_TYPE, "calendar");
  public static final MediaType PLAIN_TEXT_UTF_8 = createConstantUtf8(TEXT_TYPE, "plain");

  /**
   * <a href="http://www.rfc-editor.org/rfc/rfc4329.txt">RFC 4329</a> declares {@link
   * #JAVASCRIPT_UTF_8 application/javascript} to be the correct media type for JavaScript, but this
   * may be necessary in certain situations for compatibility.
   */

   * <p>This header is experimental.
   *
   * @since 31.0
   */
  public static final String SEC_CH_PREFERS_COLOR_SCHEME = "Sec-CH-Prefers-Color-Scheme";

  /**
   * The HTTP <a
   * href="https://www.rfc-editor.org/rfc/rfc8942#name-the-accept-ch-response-head">{@code
   * Accept-CH}</a> header field name.
   *
   * @since 31.0
   */
  public static final String ACCEPT_CH = "Accept-CH";
  /**
   * The HTTP <a