protected function validatorSingle($varFile, $strDestination)
    {
        // Move the temporary file
        if (!\Validator::isStringUuid($varFile) && is_file(TL_ROOT . '/' . $varFile)) {
            $varFile = $this->moveTemporaryFile($varFile, $strDestination);
        }

        // Convert uuid to binary format
        if (\Validator::isStringUuid($varFile)) {
            $varFile = \StringUtil::uuidToBin($varFile);
        }

        return $varFile;
    }