/**
  * return a string stating the api status
  * @return String
  */
 public function getAPIStatusString()
 {
     $kraken = new KrakenService();
     if ($kraken->getAPIStatus()) {
         return _t('Kraken.API_OKAY', '_Your credentials are valid');
     } else {
         return _t('Kraken.API_PROBLEM', '_There is a problem with your credentials');
     }
 }