eZ\Publish\Core\Repository\Repository::getObjectStateService PHP Method

    public function getObjectStateService()
    {
        if ($this->objectStateService !== null) {
            return $this->objectStateService;
        }
        $this->objectStateService = new ObjectStateService($this, $this->persistenceHandler->objectStateHandler(), $this->serviceSettings['objectState']);
        return $this->objectStateService;
    }