All classes that implement EntityTypeManagerInterface in Drupal 9
- class \Drupal\Core\Entity\EntityTypeManager implements \Symfony\Component\DependencyInjection\ContainerAwareInterface, EntityTypeManagerInterface uses \Symfony\Component\DependencyInjection\ContainerAwareTrait
- class \Drupal\Tests\Core\Entity\TestEntityTypeManager
- class \Drupal\webprofiler\Entity\EntityManagerWrapper implements \Symfony\Component\DependencyInjection\ContainerAwareInterface, EntityTypeManagerInterface