PackedScene documentation isn't elegant

4.1

So I think most people using PackedScene want to get the root node, which is the node the script is appended to, and all of its children. They have no interest in assigning ownership permissions etc. It should be possible to simply call scene.pack(self) and get the root and all children

https://docs.godotengine.org/en/stable/classes/class_packedscene.html