}
posGridBuilder.newSplitPanel(GridSize.COL100);
{
// Period of performance
final FieldsetPanel fs = posGridBuilder.newFieldset(getString("fibu.periodOfPerformance"));
final LabelValueChoiceRenderer<PeriodOfPerformanceType> performanceChoiceRenderer = new LabelValueChoiceRenderer<PeriodOfPerformanceType>(
fs, PeriodOfPerformanceType.values());
final DropDownChoice<PeriodOfPerformanceType> performanceChoice = new DropDownChoice<PeriodOfPerformanceType>(
fs.getDropDownChoiceId(), new PropertyModel<PeriodOfPerformanceType>(position, "periodOfPerformanceType"),
performanceChoiceRenderer.getValues(), performanceChoiceRenderer) {