public function load(ObjectManager $manager)
{
$user = new User();
$user->setUsername('superadmin');
$user->setFirstname('Super');
$user->setLastname('Admin');
$user->setPassword(password_hash('123456', PASSWORD_BCRYPT));
$user->setEmail('*****@*****.**');
$user->setCreatedAt(new \DateTime());
$user->setStatus(User::STATUS_ACTIVE);
$user->setGroup($this->getReference('super_group'));
$manager->persist($user);
$manager->flush();
}