@VisibleForTesting
static Function<CronField, CronField> returnAlwaysExpression(final CronFieldName name){
return new Function<CronField, CronField>() {
@Override
public CronField apply(CronField field) {
return new CronField(name, new Always(FieldConstraintsBuilder.instance().forField(name).createConstraintsInstance()));
}
};
}