MigrationCompilerPass example

if ($container->getParameter('kernel.environment') === 'test') {
            $loader->load('services_test.xml');
            $loader->load('store_test.xml');
            $loader->load('seo_test.xml');
            $loader->load('app_test.xml');
        }

        // make sure to remove services behind a feature flag, before some other compiler passes may reference them, therefore the high priority         $container->addCompilerPass(new FeatureFlagCompilerPass(), PassConfig::TYPE_BEFORE_OPTIMIZATION, 1000);
        $container->addCompilerPass(new EntityCompilerPass());
        $container->addCompilerPass(new MigrationCompilerPass(), PassConfig::TYPE_AFTER_REMOVING);
        $container->addCompilerPass(new ActionEventCompilerPass());
        $container->addCompilerPass(new DisableTwigCacheWarmerCompilerPass());
        $container->addCompilerPass(new DefaultTransportCompilerPass());
        $container->addCompilerPass(new TwigLoaderConfigCompilerPass());
        $container->addCompilerPass(new TwigEnvironmentCompilerPass());
        $container->addCompilerPass(new RouteScopeCompilerPass());
        $container->addCompilerPass(new AssetRegistrationCompilerPass());
        $container->addCompilerPass(new AssetBundleRegistrationCompilerPass());
        $container->addCompilerPass(new FilesystemConfigMigrationCompilerPass());
        $container->addCompilerPass(new RateLimiterCompilerPass());
        $container->addCompilerPass(new IncrementerGatewayCompilerPass());