EDIT

//****************** CONVERTERS ******************/

    public static TimePeriod fromVerbatim(VerbatimTimePeriod verbatimTimePeriod){

        if (verbatimTimePeriod == null){

            return null;

        }

        TimePeriod result = TimePeriod.NewInstance();

        copyCloned(verbatimTimePeriod, result);

        if (StringUtils.isNotBlank(verbatimTimePeriod.verbatimDate) &&

                StringUtils.isBlank(result.getFreeText())){

            result.setFreeText(verbatimTimePeriod.toString());

        }

        return result;

    }

    public static VerbatimTimePeriod toVerbatim(TimePeriod timePeriod){

        if (timePeriod == null){

            return null;

        }

        VerbatimTimePeriod result = VerbatimTimePeriod.NewVerbatimInstance();

        copyCloned(timePeriod, result);

        return result;

    }