Neos\Flow\Core\Booting\Scripts::initializeObjectManager PHP Method

    public static function initializeObjectManager(Bootstrap $bootstrap)
    {
        $configurationManager = $bootstrap->getEarlyInstance(ConfigurationManager::class);
        $objectConfigurationCache = $bootstrap->getEarlyInstance(CacheManager::class)->getCache('Flow_Object_Configuration');
        $objectManager = new ObjectManager($bootstrap->getContext());
        Bootstrap::$staticObjectManager = $objectManager;
        $objectManager->injectAllSettings($configurationManager->getConfiguration(ConfigurationManager::CONFIGURATION_TYPE_SETTINGS));
        $objectManager->setObjects($objectConfigurationCache->get('objects'));
        foreach ($bootstrap->getEarlyInstances() as $objectName => $instance) {
            $objectManager->setInstance($objectName, $instance);
        }
        $objectManager->get(Dispatcher::class)->injectObjectManager($objectManager);
        Debugger::injectObjectManager($objectManager);
        $bootstrap->setEarlyInstance(ObjectManagerInterface::class, $objectManager);
    }