private function getFileBackType($type)
    {
        switch ($type) {
            case Mirakl::DOCUMENT_LEGAL_IDENTITY_OF_REPRESENTATIVE:
                return Mirakl::DOCUMENT_LEGAL_IDENTITY_OF_REP_REAR;
            case Mirakl::DOCUMENT_SOLE_MAN_BUS_IDENTITY:
                return Mirakl::DOCUMENT_SOLE_MAN_BUS_IDENTITY_REAR;
            default:
                return false;
        }
    }