/**
  * Constructor for SofortLibIDealBanks
  *
  * @param string $configKey
  * @param string $apiUrl (optional)
  */
 public function __construct($configKey, $apiUrl = '')
 {
     $this->_rootTag = 'ideal';
     if ($apiUrl == '') {
         $apiUrl = getenv('idealApiUrl') != '' ? getenv('idealApiUrl') . '/banks' : self::IDEAL_BANKS_URL;
     }
     parent::__construct($configKey, $apiUrl);
 }