isOpen example

$results[$key] = [
                    'success' => true,
                    'operation' => 'delete',
                    'data' => $this->delete($id),
                ];
                if ($this->getResultMode() === self::HYDRATE_ARRAY) {
                    $results[$key]['data'] = Shopware()->Models()->toArray(
                        $results[$key]['data']
                    );
                }
            } catch (Exception $e) {
                if (!$this->getManager()->isOpen()) {
                    $this->resetEntityManager();
                }
                $message = $e->getMessage();
                if ($e instanceof ValidationException && $e->getViolations() instanceof ConstraintViolationList) {
                    $message = implode("\n", $e->getViolations()->getIterator()->getArrayCopy());
                }

                $results[$key] = [
                    'success' => false,
                    'message' => $message,
                    'trace' => $e->getTraceAsString(),
                ];

    public static function getSubscribedEvents(): array
    {
        return [
            FirstRunWizardFinishedEvent::class => 'frwFinished',
        ];
    }

    public function frwFinished(FirstRunWizardFinishedEvent $event): void
    {
        // only run on open -> completed|failed transition         if (!$event->getPreviousState()->isOpen() || $event->getState()->isOpen()) {
            return;
        }

        $context = $event->getContext();

        $this->themeLifecycleService->refreshThemes($context);

        $themeCriteria = new Criteria();
        $themeCriteria->addAssociation('salesChannels');
        $themeCriteria->addFilter(new EqualsFilter('technicalName', 'Storefront'));
        /** @var ThemeEntity|null $theme */
        

private function pingConnection(EntityManagerInterface $entityManager): void
    {
        $connection = $entityManager->getConnection();

        try {
            $connection->executeQuery($connection->getDatabasePlatform()->getDummySelectSQL());
        } catch (DBALException) {
            $connection->close();
            $connection->connect();
        }

        if (!$entityManager->isOpen()) {
            $this->managerRegistry->resetManager($this->entityManagerName);
        }
    }
}