Bravo3\Orm\Services\EntityManager::getDriver PHP Метод

    public function getDriver()
    {
        return $this->driver;
    }

 /**
  * @dataProvider entityManagerDataProvider
  * @param EntityManager $em
  */
 public function testRefs(EntityManager $em)
 {
     $members = $em->getDriver()->getMultiValueIndex($em->getKeyScheme()->getEntityRefKey('leaf', 'leaf1'));
     $this->assertCount(0, $members);
     $leaf = (new Leaf())->setId('leaf1');
     $owner = (new Owner())->setId('owner1')->setLeaf([$leaf]);
     $em->persist($leaf)->persist($owner)->flush();
     $members = $em->getDriver()->getMultiValueIndex($em->getKeyScheme()->getEntityRefKey('leaf', 'leaf1'));
     $this->assertCount(1, $members);
     $ref = new Ref(Owner::class, 'owner1', 'leaf');
     $this->assertEquals((string) $ref, $members[0]);
     $leaves = $em->sortedQuery(new SortedQuery($owner, 'leaf', 'id'));
     $this->assertCount(1, $leaves);
     $em->refresh($owner);
     $em->refresh($leaf);
     $leaf->setPublished(false);
     $em->persist($leaf)->flush();
     $leaves = $em->sortedQuery(new SortedQuery($owner, 'leaf', 'id'));
     $this->assertCount(0, $leaves);
     $leaf->setPublished(true);
     $em->persist($leaf)->flush();
     $leaves = $em->sortedQuery(new SortedQuery($owner, 'leaf', 'id'));
     $this->assertCount(1, $leaves);
     $em->delete($leaf)->flush();
     $leaves = $em->sortedQuery(new SortedQuery($owner, 'leaf', 'id'));
     $this->assertCount(0, $leaves);
 }