protected function _resetUploadedCsvData()
    {
        $this->_sCsvFilePath = null;
        \OxidEsales\Eshop\Core\Registry::getSession()->setVariable('sCsvFilePath', null);
        \OxidEsales\Eshop\Core\Registry::getSession()->setVariable('blCsvContainsHeader', null);
    }