src/Resources/doctrine/BlackForest/PiwikBundle/Entity/PiwikSite.php
public function addOperatingSystem(\BlackForest\PiwikBundle\Entity\PiwikOperatingSystem $operatingSystem)
    {
        $this->operatingSystem[] = $operatingSystem;

        return $this;
    }
public function addOperatingSystem(\BlackForest\PiwikBundle\Entity\PiwikOperatingSystem $operatingSystem)
    {
        $this->operatingSystem[] = $operatingSystem;

        return $this;
    }
public function addOperatingSystem ( \ BlackForest \ PiwikBundle \ Entity \ PiwikOperatingSystem $ operatingSystem ) { $ this -> operatingSystem [ ] = $ operatingSystem ; return $ this ; }
Add operatingSystem.

@param \BlackForest\PiwikBundle\Entity\PiwikOperatingSystem $operatingSystem

@return PiwikSite
Add operatingSystem .