public function load(ObjectManager $manager)
{
//dump($this->getReference('refcat'));
//die;
$product = new Product();
$product->setTitle('mon super produit fixtures');
$product->setDescription('lorem ipsum');
$product->setPrix('250 Euros');
$product->setQuantite('20');
$product->setActive('true');
$product->setCateg($this->getReference('refcat'));
$product->setProduitMarque($this->getReference('refbrand'));
$manager->persist($product);
$manager->flush();
}