public function testInsertIncludesAllNestedCollections()
 {
     $user = new User();
     $user->setUsername('malarzm');
     $privateBook = new Phonebook('Private');
     $privateBook->addPhonenumber(new Phonenumber('12345678'));
     $user->addPhonebook($privateBook);
     $this->dm->persist($user);
     $this->dm->flush();
     $this->assertCount(1, $this->ql, 'Inserting a document includes all nested collections and requires one query');
     $this->dm->clear();
     $user = $this->dm->find(get_class($user), $user->getId());
     $this->assertEquals('malarzm', $user->getUsername());
     $this->assertCount(1, $user->getPhonebooks());
     $this->assertEquals('Private', $user->getPhonebooks()->first()->getTitle());
     $this->assertCount(1, $user->getPhonebooks()->first()->getPhonenumbers());
     $this->assertEquals('12345678', $user->getPhonebooks()->first()->getPhonenumbers()->first()->getPhonenumber());
 }