public function getPartFactoryService()
    {
        if ($this->partFactoryService === null) {
            $this->partFactoryService = new PartFactoryService(
                $this->getPartFilterFactory(),
                $this->getStreamFactory(),
                $this->getPartStreamFilterManagerFactory(),
                $this->getMessageHelperService()
            );
        }
        return $this->partFactoryService;
    }
public function getPartFactoryService()
    {
        if ($this->partFactoryService === null) {
            $this->partFactoryService = new PartFactoryService(
                $this->getPartFilterFactory(),
                $this->getStreamFactory(),
                $this->getPartStreamFilterManagerFactory(),
                $this->getMessageHelperService()
            );
        }
        return $this->partFactoryService;
    }
public function getPartFactoryService ( ) { if ( $ this -> partFactoryService === null ) { $ this -> partFactoryService = new PartFactoryService ( $ this -> getPartFilterFactory ( ) , $ this -> getStreamFactory ( ) , $ this -> getPartStreamFilterManagerFactory ( ) , $ this -> getMessageHelperService ( ) ) ; } return $ this -> partFactoryService ; }
Returns a PartFactoryService singleton.

@return PartFactoryService
Returns a PartFactoryService singleton .