How to obtain the parent-child relationship of actor from blueprint asset

[GeorgeShaw213 (junjie shao)]

I expect to get the phase model and relative position of its actor directly from the blueprint asset.But I don’t know how to access it

			UBlueprint* bp = Cast<UBlueprint>(asset.GetAsset());
			if (bp != nullptr)
			{
				if (GExportConfig.isExportPrefab)
				{
					AActor* actor = bp->GeneratedClass->GetDefaultObject<AActor>();
					auto scene = actor->GetComponentsByClass(USceneComponent::StaticClass());
					if (actor != nullptr)
					{
						auto root = actor->GetRootComponent();
					}
				}
				continue;
			}