FluidTYPO3\Flux\Provider\AbstractProvider::getExtensionKey PHP Method

    public function getExtensionKey(array $row)
    {
        unset($row);
        return $this->extensionKey;
    }

 /**
  * @param array $row
  * @return string
  */
 public function getExtensionKey(array $row)
 {
     $controllerExtensionKey = $this->getControllerExtensionKeyFromRecord($row);
     if (FALSE === empty($controllerExtensionKey)) {
         return ExtensionNamingUtility::getExtensionKey($controllerExtensionKey);
     }
     return parent::getExtensionKey($row);
 }