Piwik\Plugins\Referrers\API::getNumberOfDistinctCampaigns PHP Method

    public function getNumberOfDistinctCampaigns($idSite, $period, $date, $segment = false)
    {
        return $this->getNumeric(Archiver::METRIC_DISTINCT_CAMPAIGN_RECORD_NAME, $idSite, $period, $date, $segment);
    }