polem / departements

        return $this->departements->get($departementCode)->getOrElse(null);

    }

    public function findDepartementByName($departementName) {

        $departementName = $this->slugify($departementName);

        if(!isset($this->index['departements'][$departementName])) {

            return null;

        }

        $departementCode = $this->index['departements'][$departementName];

        return $this->departements->get($departementCode)->get();

    }

    public function findRegionByName($regionName) {

        $regionName = $this->slugify($regionName);

        return $this->departements->get($departementCode)->get();

    }

    public function findRegionByName($regionName) {

        $regionName = $this->slugify($regionName);

        if(!isset($this->index['regions'][$regionName])) {

            return null;

        }

        $regionCode = $this->index['regions'][$regionName];

        return $this->regions->get($regionCode)->get();

    }

    public function findRegionByCode($regionCode) {

        return $this->regions->get($regionCode)->getOrElse(null);