All classes that implement EntityDisplayRepositoryInterface in Drupal 8
- class \Drupal\Core\Entity\EntityDisplayRepository implements EntityDisplayRepositoryInterface uses UseCacheBackendTrait, StringTranslationTrait
- class \Drupal\Core\Entity\EntityManager implements \Symfony\Component\DependencyInjection\ContainerAwareInterface, EntityManagerInterface uses \Symfony\Component\DependencyInjection\ContainerAwareTrait