// Add the algorithm condition, only accept AWS SignV4 Sha256.
	algorithmConditionStr := `["eq", "$x-amz-algorithm", "AWS4-HMAC-SHA256"]`
	// Add the date condition, only accept the current date.
	dateConditionStr := fmt.Sprintf(`["eq", "$x-amz-date", "%s"]`, t.Format(iso8601DateFormat))
	// Add the credential string, only accept the credential passed.

                converterMap.put(name.toString(), converter);
            }
        }
        return this;
    }

    /**
     * Sets a converter for dates.
     *
     * @param pattern
     *            The date pattern. Must not be {@literal null} or an empty string.
     * @param propertyNames

   *   generalTime    GeneralizedTime
   * }
   * ```
   *
   * RFC 5280, section 4.1.2.5:
   *
   * > CAs conforming to this profile MUST always encode certificate validity dates through the year
   * > 2049 as UTCTime; certificate validity dates in 2050 or later MUST be encoded as
   * > GeneralizedTime.
   */
  internal val time: DerAdapter<Long> =
    object : DerAdapter<Long> {

    }

    /**
     * Gets the received date from a message by parsing the received headers.
     *
     * @param message the message to get the received date from
     * @return the received date or null if not found
     * @throws MessagingException if message access fails
     */
    protected static Date getReceivedDate(final Message message) throws MessagingException {
        final Date today = new Date();

	// ErrInvalidRetentionDate - indicates that retention date needs to be in ISO 8601 format
	ErrInvalidRetentionDate = errors.New("date must be provided in ISO 8601 format")
	// ErrPastObjectLockRetainDate - indicates that retention date must be in the future
	ErrPastObjectLockRetainDate = errors.New("the retain until date must be in the future")
	// ErrUnknownWORMModeDirective - indicates that the retention mode is invalid

    private var servedDate: Date? = null
    private var servedDateString: String? = null

    /** The last modified date of the cached response, if known. */
    private var lastModified: Date? = null
    private var lastModifiedString: String? = null

    /**
     * The expiration date of the cached response, if known. If both this field and the max age are

   * either the field is absent or cannot be parsed as a date.
   */
  fun getDate(name: String): Date? = get(name)?.toHttpDateOrNull()

  /**
   * Returns the last value corresponding to the specified field parsed as an HTTP date, or null if
   * either the field is absent or cannot be parsed as a date.
   */

 * </p>
 * <ul>
 *   <li>Starting and finishing threads</li>
 *   <li>Starting and cleaning up crawling</li>
 *   <li>Handling unsupported URLs</li>
 *   <li>Checking last modified dates</li>
 *   <li>Getting content</li>
 *   <li>Handling redirects</li>
 *   <li>Processing responses</li>
 *   <li>Handling exceptions during crawling and child URL processing</li>

    private Date pwdLastChangeTime;
    private Date pwdCanChangeTime;
    private Date pwdMustChangeTime;
    private short logonCount;
    private short badPasswordCount;
    private String userName;
    private String userDisplayName;
    private String logonScript;
    private String profilePath;
    private String homeDirectory;
    private String homeDrive;
    private String serverName;

            final Date date = toDate(str, format);
            if (date != null) {
                return date;
            }
        }
        final Date date = toDate(str, locale);
        if (date != null) {
            return date;
        }
        final java.sql.Date sqlDate = toSqlDateJdbcEscape(str);
        if (sqlDate != null) {