protected function execute(InputInterface $input, OutputInterface $output)
    {
        $em = $this->getContainer()->get('doctrine.orm.entity_manager');

        $medicamentService = $this->getContainer()->get('pharmacy.service.medicament');

        $medicaments = $medicamentService->getMedicaments();
        $c = 0;

        foreach ($medicaments as $drug) {
            $c++;
            $taste = $this->convertQuantity($drug->getQuantity());
            $drug->setQuantity($taste);
            $em->persist($drug);

            if ($c === 50) {
                $em->flush();
                $c = 0;
            }
        }

        $em->flush();
   }