How to nest prefabs to another with api?

I'm generating some GameObjects hierarchy procedurally. I.e.,

with prefabs A, B, C.
I generate a

MyGameObjectRoot
A instance 1
A instance 2
B instance 1
B instance 2


I use the prefab utility to write MyGameObjectRoot hierarchy to prefab. But all the children objects loose their association with their original prefabs?

 

In the new nested prefab system you should check out this: https://docs.unity3d.com/2018.3/Doc...rence/PrefabUtility.ApplyAddedGameObject.html

 

Yes, the new nested prefab. Why does the doc say "To use this method, you must first add a GameObject to an existing Prefab instance."?

Should I be using the above function like this?

for( int i=0; i<100; i++) {
GameObject InstanceOfPrefabA = Instantiate( PrefabAInstance);
ApplyAddedGameObject( InstanceOfPrefabA, "./MyGameObjectRootPrefab", InteractionMode.AutomatedAction);
}

I'm hoping the 100 instances of PrefabA each still retain knowledge that each came from PrefabA, so that I can modify later PrefabA and all the 100 instances in this hierarchy will also reflect the change.

 

This is exactly what I was searching for just now. Thank you @SteenLund for those links.

 

This seems backwards ...

If I am to make B a child of A, why not make A a prefab first and make B a child of that prefab?

This is loads more intuitive...