[AActor](API\Runtime\Engine\GameFramework\AActor) * SpawnTransientActor ( [TSubclassOf](API\Runtime\CoreUObject\Templates\TSubclassOf)< [AActor](API\Runtime\Engine\GameFramework\AActor) > ActorClass, const [FString](API\Runtime\Core\Containers\FString) & ActorName, [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< void([AActor](API\Runtime\Engine\GameFramework\AActor) *)> DeferredConstructionCallback )