Kdyby\Doctrine\EntityRepository::fetch PHP Method

    public function fetch(Persistence\Query $queryObject, $hydrationMode = AbstractQuery::HYDRATE_OBJECT)
    {
        try {
            return $queryObject->fetch($this, $hydrationMode);
        } catch (\Exception $e) {
            throw $this->handleQueryException($e, $queryObject);
        }
    }

 /**
  * @inheritdoc
  */
 protected function execute(InputInterface $input, OutputInterface $output)
 {
     $lang = $input->getArgument(self::LANGUAGE_ARGUMENT);
     /** @var Language $language */
     if (($language = $this->findLanguage($lang)) === NULL) {
         $output->writeln("<error>Unknown language {$lang} given!");
         return 1;
     }
     $output->writeln('<comment>Finding scenarios...</comment>');
     $scenarios = $this->scenariosRepository->fetch(new ScreenplayExportQuery($language));
     $count = $scenarios->getTotalCount();
     $output->writeln("<comment>Found {$count} scenarios</comment>");
     $progressBar = new ProgressBar($output);
     $progressBar->start($count);
     for ($i = 0; $i <= $count; $i += self::BATCH_SIZE) {
         $scenarios->applyPaging($i, self::BATCH_SIZE);
         $scenariosArray = [];
         /** @var Screenplay $screenplay */
         foreach ($scenarios as $screenplay) {
             $scenariosArray[] = $screenplay;
             $progressBar->advance();
         }
         $this->screenplayProducer->publish($scenariosArray);
     }
     $progressBar->finish();
     $output->writeln("");
     $output->writeln("<info>Finish</info>");
 }