final TextArea<String> desc = new TextArea<String>(fsDesc.getTextAreaId(), new PropertyModel<String>(this.data, "description"));
fsDesc.add(desc);
// attendee list
final FieldsetPanel fsAttendee = gridBuilder.newFieldset(getString("plugins.poll.attendee.users"));
final UsersProvider usersProvider = new UsersProvider();
final MultiChoiceListHelper<PFUserDO> attendeeHelper = new MultiChoiceListHelper<PFUserDO>().setComparator(new UsersComparator())
.setFullList(usersProvider.getSortedUsers());
attendeeHelper.setAssignedItems(attendeePFUserList);
final Select2MultiChoice<PFUserDO> attendees = new Select2MultiChoice<PFUserDO>(fsAttendee.getSelect2MultiChoiceId(),
new PropertyModel<Collection<PFUserDO>>(attendeeHelper, "assignedItems"), usersProvider);
fsAttendee.add(attendees);