public function benchPersistTwo()
{
$user1 = new CmsUser();
$user1->username = 'dantleech';
$address = new CmsAddress();
$address->city = "Springfield";
$address->zip = "12354";
$address->country = "Germany";
$user1->address = $address;
$this->documentManager->persist($user1);
$this->documentManager->persist($address);
$this->documentManager->flush();
}