Piwik\Plugins\Goals\API::appendSegment PHP Method

    protected function appendSegment($segment, $segmentToAppend)
    {
        if (empty($segment)) {
            return $segmentToAppend;
        }
        if (empty($segmentToAppend)) {
            return $segment;
        }
        $segment .= urlencode(SegmentExpression::AND_DELIMITER);
        $segment .= $segmentToAppend;
        return $segment;
    }