entityDefinitions as $entityType => $entityInfo) { if ($entityInfo->getKey('revision')) { $this->derivatives[$entityType] = [ 'id' => "entity_reference_revisions:$entityType", 'class' => EntityReferenceRevisions::class, 'requirements_met' => 1, 'provider' => $entityInfo->getProvider(), ]; } } return $this->derivatives; } }