return "";
}
public String removeUserFromGroup() throws ObjectLockedException, ObjectExistsException {
ViewGroup viewGroup = (ViewGroup) collectionGroups.getRowData();
Group group = viewGroup.getGroup();
ViewUser viewUser = (ViewUser) viewGroup.getUsersModel().getRowData();
group.getUsers().remove(viewUser.getUser());
GroupDao.createInstance().update(group);
viewUser.setMember(false);