Callback on Apply Prefab (Unity)

PrefabApplyCallback.cs

using UnityEngine;
using UnityEditor;

[InitializeOnLoad]
internal class PrefabExtension
	{
	static PrefabExtension()
		{
		UnityEditor.PrefabUtility.prefabInstanceUpdated += OnPrefabInstanceUpdate;
		}

	static void OnPrefabInstanceUpdate(GameObject instance)
		{
		UnityEngine.Debug.Log("[Callback] Prefab.Apply on instance named :" + instance.name);

		GameObject prefab = UnityEditor.PrefabUtility.GetPrefabParent(instance) as GameObject;
		string prefabPath = AssetDatabase.GetAssetPath(prefab);
		UnityEngine.Debug.Log("@Prefab originPath="+prefabPath);
		}
	}