How to create a nested scene?

[MatrixDev]

Lets say I have two scenes - person and gun. So I spawned a person, now I want to spawn gun scene and "attach" it (make a child) to the "RightHand" entity from the person scene.

What I'm currently doing is combining SceneSpawner::iter_instance_entities with Query::<(Entity, Name)>::iter_many to spawn gun as a child of the person. But it is not ergonomic and feels a little off having a system just for spawning child scenes.

Is there a better way?