saveGroupOptions = new Button(Util.C.buttonSaveGroupOptions());
saveGroupOptions.setEnabled(false);
saveGroupOptions.addClickHandler(new ClickHandler() {
@Override
public void onClick(final ClickEvent event) {
final GroupOptions groupOptions =
new GroupOptions(visibleToAllCheckBox.getValue());
Util.GROUP_SVC.changeGroupOptions(getGroupId(), groupOptions,
new GerritCallback<VoidResult>() {
public void onSuccess(final VoidResult result) {
saveGroupOptions.setEnabled(false);
}