Pimcore\Model\Search\Backend\Data::save PHP Method

    public function save()
    {
        if ($this->id instanceof Data\Id) {
            \Pimcore::getEventManager()->trigger("search.backend.preSave", $this);
            $this->getDao()->save();
            \Pimcore::getEventManager()->trigger("search.backend.postSave", $this);
        } else {
            throw new \Exception("Search\\Backend\\Data cannot be saved - no id set!");
        }
    }

 protected function execute(InputInterface $input, OutputInterface $output)
 {
     // clear all data
     $db = \Pimcore\Db::get();
     $db->query("TRUNCATE `search_backend_data`;");
     $elementsPerLoop = 100;
     $types = ["asset", "document", "object"];
     foreach ($types as $type) {
         $listClassName = "\\Pimcore\\Model\\" . ucfirst($type) . "\\Listing";
         $list = new $listClassName();
         if (method_exists($list, "setUnpublished")) {
             $list->setUnpublished(true);
         }
         $elementsTotal = $list->getTotalCount();
         for ($i = 0; $i < ceil($elementsTotal / $elementsPerLoop); $i++) {
             $list->setLimit($elementsPerLoop);
             $list->setOffset($i * $elementsPerLoop);
             $this->output->writeln("Processing " . $type . ": " . ($list->getOffset() + $elementsPerLoop) . "/" . $elementsTotal);
             $elements = $list->load();
             foreach ($elements as $element) {
                 try {
                     $searchEntry = Search\Backend\Data::getForElement($element);
                     if ($searchEntry instanceof Search\Backend\Data and $searchEntry->getId() instanceof Search\Backend\Data\Id) {
                         $searchEntry->setDataFromElement($element);
                     } else {
                         $searchEntry = new Search\Backend\Data($element);
                     }
                     $searchEntry->save();
                 } catch (\Exception $e) {
                     Logger::err($e);
                 }
             }
             \Pimcore::collectGarbage();
         }
     }
     $db->query("OPTIMIZE TABLE search_backend_data;");
 }