public function load(ObjectManager $manager)
{
$cart = new Cart();
$cart->setExpiresAt(new \DateTime('next day'));
$cart->setIdentifier('1');
$cart->setPrice(0);
$cart->setFinalPrice(0);
$ticket = new TicketItem();
$ticket->setPrice(3);
$ticket->setFinalPrice(3);
$cart->addItem($ticket);
$tShirt = new TshirtItem();
$tShirt->setPrice(4);
$tShirt->setFinalPrice(5);
$cart->addItem($tShirt);
$manager->persist($cart);
$manager->flush();
FixtureCollector::addCart(FixtureCollector::ORM, $cart);
}