public function countAllCountsSubTypesOfTheManagedType()
{
$this->superEntityRepository = $this->objectManager->get(Fixtures\SuperEntityRepository::class);
$superEntity = new Fixtures\SuperEntity();
$superEntity->setContent('this is the super entity');
$this->superEntityRepository->add($superEntity);
$subEntity = new Fixtures\SubEntity();
$subEntity->setContent('this is the sub entity');
$this->superEntityRepository->add($subEntity);
$this->persistenceManager->persistAll();
$this->assertEquals(2, $this->superEntityRepository->countAll());
}