EntityFieldManagerInterface

class \Drupal\Core\Entity\EntityFieldManager implements \Drupal\Core\Entity\EntityFieldManagerInterface uses \Drupal\Core\Cache\UseCacheBackendTrait, \Drupal\Core\StringTranslation\StringTranslationTrait
class \Drupal\Tests\Core\Entity\TestEntityFieldManager extends \Drupal\Core\Entity\EntityFieldManager

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