public function save()
 {
     foreach ($this->getValues() as $k => $v) {
         $key = opPluginChannelServerPluginConfiguration::CONFIG_KEY_PREFIX . $k;
         $config = Doctrine::getTable('SnsConfig')->retrieveByName($key);
         if (!$config) {
             $config = new SnsConfig();
             $config->setName($key);
         }
         $config->setValue($v);
         $config->save();
         if (!$v) {
             $config->delete();
         }
     }
 }