Doctrine\ODM\PHPCR\UnitOfWork::doRefresh PHP Method

    private function doRefresh($document, &$visited)
    {
        $oid = spl_object_hash($document);
        if (isset($visited[$oid])) {
            return;
        }
        $visited[$oid] = true;
        if ($this->getDocumentState($document) !== self::STATE_MANAGED) {
            throw new InvalidArgumentException('Document has to be managed to be refreshed ' . self::objToStr($document, $this->dm));
        }
        $node = $this->session->getNode($this->getDocumentId($document));
        $class = $this->dm->getClassMetadata(get_class($document));
        $this->cascadeRefresh($class, $document, $visited);
        $hints = array('refresh' => true);
        $this->getOrCreateDocument(ClassUtils::getClass($document), $node, $hints);
    }