public static final String CONTENT_DISPOSITION = "Content-Disposition";

  /** The HTTP {@code Content-Encoding} header field name. */
  public static final String CONTENT_ENCODING = "Content-Encoding";

  /** The HTTP {@code Content-Language} header field name. */
  public static final String CONTENT_LANGUAGE = "Content-Language";

  /** The HTTP {@code Content-Location} header field name. */