Pimcore\Controller\Action\Admin\Document::saveToSessionAction PHP Метод

    public function saveToSessionAction()
    {
        if ($this->getParam("id")) {
            $key = "document_" . $this->getParam("id");
            $session = Session::get("pimcore_documents");
            if (!($document = $session->{$key})) {
                $document = Model\Document::getById($this->getParam("id"));
                $document = $this->getLatestVersion($document);
            }
            // set _fulldump otherwise the properties will be removed because of the session-serialize
            $document->_fulldump = true;
            $this->setValuesToDocument($document);
            $session->{$key} = $document;
            Session::writeClose();
        }
        $this->_helper->json(["success" => true]);
    }