public function convertToEz($posixLocale)
    {
        if (!isset($this->reverseConversionMap[$posixLocale])) {
            $this->logger->warning("Could not convert locale '$posixLocale' to eZ Publish format. Please check your locale configuration in ezplatform.yml");

            return;
        }

        return $this->reverseConversionMap[$posixLocale];
    }