public static String createFileDateTimeString() {
        return FILE_TIME_STROOM_TIME_FORMATTER.format(ZonedDateTime.now(ZoneOffset.UTC));
    }
Create a 'file' format date string witht he current system time.

@return string The date as a 'file' format date string.
stroom-legacy/stroom-legacy-model_6_1/src/main/java/stroom/legacy/model_6_1/DateUtil.java