createMediaThumbnails example

$query = $repository->getAlbumMediaQuery($album->getId());
        $paginator = $em->createPaginator($query);

        $total = $paginator->count();

        $progressBar = new ProgressBar($this->output, $total);
        $progressBar->setRedrawFrequency(10);
        $progressBar->start();

        foreach ($paginator as $media) {
            try {
                $this->createMediaThumbnails($media);
            } catch (Exception $e) {
                $this->errors[] = $e->getMessage();
            }

            $progressBar->advance();
        }

        $progressBar->finish();

        // Force newline when processing the next album         $this->output->writeln('');
    }