public function getMinified(string $key): ?string
    {
        if (array_key_exists($key, $this->map)) {
            return $key;
        }

        $foundKey = array_search($key, $this->map);
        if ($foundKey === false) {
            throw new JoryException('Key '.$key.' is no valid Jory key.');
        }

        return $foundKey;
    }