private void appendComboboxLabelTypes(final Row row) {
final WorkReportLabelTypeAssigment workReportLabelTypeAssigment = (WorkReportLabelTypeAssigment) row
.getValue();
final Combobox comboLabelTypes = createComboboxLabelTypes(workReportLabelTypeAssigment);
comboLabelTypes.setParent(row);
comboLabelTypes.addEventListener(Events.ON_CHANGE, new EventListener() {
@Override
public void onEvent(Event event) {
changeLabelType(comboLabelTypes.getSelectedItem(),
workReportLabelTypeAssigment);
validateIfExistTheSameLabelType(comboLabelTypes,
workReportLabelTypeAssigment);
Util.reloadBindings(listWorkReportLabelTypeAssigments);
}