Pimcore\Model\Object\ClassDefinition\Data\MultihrefMetadata::getForCsvExport PHP Method

    public function getForCsvExport($object, $params = [])
    {
        $data = $this->getDataFromObjectParam($object, $params);
        if (is_array($data)) {
            $paths = [];
            foreach ($data as $metaObject) {
                $eo = $metaObject->getElement();
                if ($eo instanceof Element\ElementInterface) {
                    $paths[] = Element\Service::getType($eo) . ":" . $eo->getRealFullPath();
                }
            }
            return implode(",", $paths);
        } else {
            return null;
        }
    }