code: public function execute(InputInterface $input, OutputInterface $output): ?int
      {
          /** @var Application $application */
          $application = $this->getApplication();
  
          DoctrineCommandHelper::setApplicationConnection($application, $input->getOption('db-configuration'));
  
          DoctrineCommand::configureMigrations(
              $application->getKernel()->getContainer(),
              $this->getMigrationConfiguration($input, $output)
          );
  
          parent::execute($input, $output);
  
          return 0;
      }
docs: {@inheritdoc}