public function save(Application_Model_Profile $model)
 {
     $data = array('arg' => $model->getArg(), 'label' => $model->getLabel(), 'link' => $model->getLink());
     if (null === ($id = $model->getId())) {
         unset($data['id']);
         $id = $this->getDbTable()->insert($data);
         $model->setId($id);
     } else {
         $this->getDbTable()->update($data, array('id = ?' => $id));
     }
 }