GetPrefabAssetType returns incorrect value

Hi,

I'm currently trying to create a tool to speed up workflow. The function of this tool is to add component to a list of selected prefabs, but to prevent double adding on regular/variants, I want to check if the prefab I might have accidentally selected is already a variant.

Here come's the problem, I am unable to get a return value of variant even though the asset I selected is a prefab variant, and I know it is because the icon of the prefab is with the black lines. Strangely if I create a variant of the variant, the engine returns me a value of variant instead of regular.

Recreating the scenario :
Create empty gameobject in scene;
Set gameobject as prefab;
Right click (prefab)gameobject and create prefab variant (gameobject variant);
Test code returns the (gameobject variant) as a regular prefab;
Right click (prefab)gameobject variant and create prefab variant (gameobject variant variant)
Test code returns the (gameobject variant variant) as variant prefab;

I'm using Unity 2019.3.9 if that should affect anything

By the way, most parts of the test code that I'm currently using is from the prefab utility page : https://docs.unity3d.com/ScriptRefe...47.1315843227.1608449610-549580194.1603079518

Hope someone can enlighten on this. Thanks!

 

Here is the snippet of my code :

Code (CSharp):

1. public class ParticleCheckResult
2.     {
3.         public GameObject myParSys;
4.         public string particleAddedResult;
5.     }
6.  
7.  
8.     public List<ParticleCheckResult> parSysForChecks = new List<ParticleCheckResult>();
9.  
10. public void AddManaged()
11.     {
12.         foreach (var currPar in parSysForChecks)
13.         {
14.             GameObject assetRoot = currPar.myParSys as GameObject;
15.             string assetPath = AssetDatabase.GetAssetPath(assetRoot);
16.             GameObject contentsRoot = PrefabUtility.LoadPrefabContents(assetPath);
17.  
18.             Debug.Log(currPar.myParSys.name + " is " + PrefabUtility.GetPrefabAssetType(contentsRoot));
19.             continue;
20. }
21. }

the GameObjects I placed in the list :


and the results :


as you can see, the base prefab is not even treated as a prefab, and the first level variant is treated as regular. Can someone enlighten me on whether this is intended behaviour, or should I use another method to check the prefab type? Thanks!