Piwik\Plugins\UserCountryMap\UserCountryMap::getStylesheetFiles PHP Method

    public function getStylesheetFiles(&$stylesheets)
    {
        $stylesheets[] = "plugins/UserCountryMap/stylesheets/visitor-map.less";
        $stylesheets[] = "plugins/UserCountryMap/stylesheets/realtime-map.less";
    }