/** The HTTP {@code Access-Control-Request-Method} header field name. */
  public static final String ACCESS_CONTROL_REQUEST_METHOD = "Access-Control-Request-Method";
  /** The HTTP {@code Authorization} header field name. */
  public static final String AUTHORIZATION = "Authorization";
  /** The HTTP {@code Connection} header field name. */
  public static final String CONNECTION = "Connection";
  /** The HTTP {@code Cookie} header field name. */