AddDebugLogProcessorPass example

$container->addCompilerPass(new TestServiceContainerRealRefPass(), PassConfig::TYPE_AFTER_REMOVING);
        $this->addCompilerPassIfExists($container, AddMimeTypeGuesserPass::class);
        $this->addCompilerPassIfExists($container, AddScheduleMessengerPass::class);
        $this->addCompilerPassIfExists($container, MessengerPass::class);
        $this->addCompilerPassIfExists($container, HttpClientPass::class);
        $this->addCompilerPassIfExists($container, AddAutoMappingConfigurationPass::class);
        $container->addCompilerPass(new RegisterReverseContainerPass(true));
        $container->addCompilerPass(new RegisterReverseContainerPass(false), PassConfig::TYPE_AFTER_REMOVING);
        $container->addCompilerPass(new RemoveUnusedSessionMarshallingHandlerPass());

        if ($container->getParameter('kernel.debug')) {
            $container->addCompilerPass(new AddDebugLogProcessorPass(), PassConfig::TYPE_BEFORE_OPTIMIZATION, 2);
            $container->addCompilerPass(new UnusedTagsPass(), PassConfig::TYPE_AFTER_REMOVING);
            $container->addCompilerPass(new ContainerBuilderDebugDumpPass(), PassConfig::TYPE_BEFORE_REMOVING, -255);
            $container->addCompilerPass(new CacheCollectorPass(), PassConfig::TYPE_BEFORE_REMOVING);
        }
    }

    private function addCompilerPassIfExists(ContainerBuilder $container, string $class, string $type = PassConfig::TYPE_BEFORE_OPTIMIZATION, int $priority = 0): void
    {
        $container->addResource(new ClassExistenceResource($class));

        if (class_exists($class)) {