Xpressengine\Widget\WidgetParser::parseWidget PHP Method

    protected function parseWidget($matches)
    {
        $widgetHandler = $this->widgetHandler;
        try {
            $widgetXmlString = $matches[0];
            $inputs = $this->parseCode($widgetXmlString);
            $widgetId = array_get($inputs, '@attributes.id');
            $retString = $widgetHandler->render($widgetId, $inputs);
            if ($retString !== null && !empty($retString)) {
                return $retString;
            }
        } catch (\Exception $e) {
            return '';
        }
        return '';
    }