setEntityManager example

$connection->getDatabasePlatform()->registerDoctrineTypeMapping('enum', 'string');
        $connection->getDatabasePlatform()->registerDoctrineTypeMapping('bit', 'boolean');

        $entityManager = ModelManager::createInstance(
            $connection,
            $config,
            $eventManager,
            $operatorValidator
        );

        LazyFetchModelEntity::setEntityManager($entityManager);

        $this->generateAttributeModels($entityManager);

        return $entityManager;
    }

    /** * @param ModelManager $entityManager */
    protected function generateAttributeModels($entityManager)
    {