Open a Prefab in the Editor from an editor script

Hi, I'm hoping someone can help me out with this issue,

I'm trying to open a prefab from my Editor script so that it's being edited in the Scene window in Unity.
I have found a way to do this for Scenes by using

Code (csharp):

1. EditorSceneManager.OpenScene(scenePath);

this will open the Scene in the Scene editor window so I can visually edit the scene. I'm trying to do the same thing for prefabs.

In Unity 2018.3 I double click on a prefab in the project window and it launches the prefab in the Prefab Editing Environment in the Scene window. How can I do this from an editor script?
I have tried

Code (csharp):

1. PrefabUtility.LoadPrefabContents(prefabPath);

and

Code (csharp):

1. Scene scene = EditorSceneManager.NewPreviewScene();
2. PrefabUtility.LoadPrefabContentsIntoPreviewScene(prefabPath, scene);

but this seems to silently edit the prefab? I want the prefab to open in the Scene view like it does if I double click it.
I'm looking for something like OpenPrefab(prefabPath) to edit a prefab from the project window in the Scene window using the Prefab Editing environment but not sure how, or which Utility class to use to do that.

I am also trying to set a template scene, I think I need to do this by setting the

EditorSettings.prefabEnvironment

Any insight into solving this will be greatly appreciated!

 

It seems the answer is to just call this:
AssetDatabase.OpenAsset(AssetDatabase.LoadAssetAtPath(yourPrefabAssetPath));

I could not get LoadPrefabContentsIntoPreviewScene to work either.