public static String createNormalDateTimeString(final Long ms) {
        if (ms == null) {
            return "";
        }
        return DEFAULT_FORMATTER.format(Instant.ofEpochMilli(ms)
                .atZone(ZoneOffset.UTC));
    }
Create a 'normal' type date.

@param ms The date/time to convert to a string, in milliseconds since the epoch
@return The 'normal' string representation of the passed date/time
stroom-query/stroom-query-language/src/main/java/stroom/query/language/functions/DateUtil.java