public function prepareLibraryDefaults(){
        $libraries = $this->container->getParameter('libraries');
        //Initiate Library Classes and load defaults
        foreach($libraries as $library=>$defaults){
            //load class
            $this->addLibraryClass($library,$defaults[self::FIELD_CLASS]);
            $this->setLibDefaults($library,$defaults[self::FIELD_DEFAULT_VALUES]);
        }
    }