Piwik\Segment::getAvailableSegments PHP Method

    private function getAvailableSegments()
    {
        // segment metadata
        if (empty($this->availableSegments)) {
            $this->availableSegments = API::getInstance()->getSegmentsMetadata($this->idSites, $_hideImplementationData = false);
        }
        return $this->availableSegments;
    }