function getUniqueClicksCount(
        $fromDate = null,
        $toDate = null,
        $mailingIds = null,
        $contactIds = null,
        $contactEmails = null,
        $contactExternalIds = null,

        $excludeAnonymousClicks = false)
    {

        $params = $this->createCountQueryParameters($fromDate, $toDate, $contactIds, $contactEmails, $contactExternalIds, $mailingIds, null);

        if (isset($excludeAnonymousClicks)) $params['exclude_anonymous_clicks'] = ($excludeAnonymousClicks == true) ? "true" : "false";

        return $this->get('reports/clicks/unique/count', $params);
    }