public function getVendorTree()
    {
        if ($this->_getVendorId() && $this->_oVendorTree === null) {
            /** @var \OxidEsales\Eshop\Application\Model\VendorList $oVendorTree */
            $oVendorTree = oxNew(\OxidEsales\Eshop\Application\Model\VendorList::class);
            $oVendorTree->buildVendorTree(
                'vendorlist',
                $this->getActVendor()->getId(),
                \OxidEsales\Eshop\Core\Registry::getConfig()->getShopHomeUrl()
            );
            $this->_oVendorTree = $oVendorTree;
        }

        return $this->_oVendorTree;
    }