Question How to get corresponding object from loaded content?

Hi

My goal is to delete from a prefab a specific object. I use the following code to do so:

Code (CSharp):

1. GameObject objectToDestroy = ...; //my input
2. string prefabPath = PrefabUtility.GetPrefabAssetPathOfNearestInstanceRoot(objectToDestroy);
3. GameObject prefabContentsRoot = PrefabUtility.LoadPrefabContents(prefabPath);
4.  
5. GameObject correspondingObject = ...;//Find in prefabContentsRoot the object corresponding to objectToDestroy
6.  
7. DestroyObject(correspondingObject );
8.  
9. PrefabUtility.SaveAsPrefabAsset(prefabContentsRoot, prefabPath);
10. PrefabUtility.UnloadPrefabContents(prefabContentsRoot);

For now, I find the corresponding object by comparing names, but this is of course not a safe way (multiple objects can have the same name in the same prefab).
I tried using the PrefabUtility.GetCorrespondingObjectXXX methods, but they return an object that is part of the prefab asset, and not part of the prefab loaded content. So I guess I need a PrefabUtility.GetCorrespondingObjectFromInstance(prefabContentsRoot, objectToDestroy), but such method does not seem to exist. How should I do?

Thanks