public function benchPersistMany()
{
$parent1 = new ParentTestObj();
$parent1->nodename = "root1";
$parent1->name = "root1";
$parent1->setParentDocument($this->root);
$parent2 = new ParentTestObj();
$parent2->name = "/root2";
$parent2->nodename = "root2";
$parent2->setParentDocument($this->root);
$child = new ParentNoNodeNameTestObj();
$child->setParentDocument($parent1);
$child->name = "child";
$c1 = new Comment();
$c1->name = 'c1';
$c1->parent = $this->root;
$c1->setText('deutsch');
$group1 = new \Doctrine\Tests\Models\CMS\CmsGroup();
$group1->name = "Test!";
$group1->id = '/functional/group1';
$group2 = new \Doctrine\Tests\Models\CMS\CmsGroup();
$group2->name = "Test!";
$group2->id = '/functional/group2';
$user = new \Doctrine\Tests\Models\CMS\CmsUser();
$user->username = "beberlei";
$user->name = "Benjamin";
$user->addGroup($group1);
$user->addGroup($group2);
$this->documentManager->persist($parent1);
$this->documentManager->persist($parent2);
$this->documentManager->persist($child);
$this->documentManager->persist($c1);
$this->documentManager->persist($user);
$this->documentManager->persist($group1);
$this->documentManager->persist($group2);
$this->documentManager->flush();
}