static String commaDelimitedStringToListOfString(final String oldValue) {
        return delimitedStringToListOfString(",", oldValue);
    }
ModelString e.g. 30d to an ISO-8601 duration string, e.g. P30D
stroom-legacy/stroom-legacy-db-migration/src/main/java/stroom/legacy/db/migration/V07_00_00_1202__property_rename.java