public function getRecommendationServiceCredentials($mandatorId = null, $siteAccess = null)
    {
        $siteAccesses = $this->getSiteAccesses($mandatorId, $siteAccess);
        $siteAccess = end($siteAccesses);

        if ($siteAccess === self::SYSTEM_DEFAULT_SITEACCESS_NAME) {
            $siteAccess = null;
        }

        $customerId = $this->configResolver->getParameter('yoochoose.customer_id', 'ez_recommendation', $siteAccess);
        $licenceKey = $this->configResolver->getParameter('yoochoose.license_key', 'ez_recommendation', $siteAccess);

        return [$customerId, $licenceKey];
    }