All classes that implement ResourceIdentifierInterface in Drupal 9
- class \Drupal\jsonapi\Exception\EntityAccessDeniedHttpException implements ResourceIdentifierInterface uses DependencySerializationTrait, ResourceIdentifierTrait
- class \Drupal\jsonapi\JsonApiResource\LabelOnlyResourceObject
- class \Drupal\jsonapi\JsonApiResource\ResourceIdentifier implements ResourceIdentifierInterface
- class \Drupal\jsonapi\JsonApiResource\ResourceObject implements CacheableDependencyInterface, ResourceIdentifierInterface uses CacheableDependencyTrait, ResourceIdentifierTrait