public static boolean looksLikeDate(final String date) {
        return date != null && date.length() == DATE_LENGTH && date.charAt(date.length() - 1) == 'Z';
    }
Parse a 'file' type date.

@param date string date
@return date as milliseconds since epoch
@throws IllegalArgumentException if date does not parse
stroom-legacy/stroom-legacy-model_6_1/src/main/java/stroom/legacy/model_6_1/DateUtil.java