* Timing-Allow-Origin}</a> header field name.
   *
   * @since 15.0
   */
  public static final String TIMING_ALLOW_ORIGIN = "Timing-Allow-Origin";
  /** The HTTP {@code Trailer} header field name. */
  public static final String TRAILER = "Trailer";
  /** The HTTP {@code Transfer-Encoding} header field name. */
  public static final String TRANSFER_ENCODING = "Transfer-Encoding";
  /** The HTTP {@code Vary} header field name. */