おかしいプレハブを強制的にブレークする

ForcelyBreakPrefab.cs

		[MenuItem("GameObject/Forcely Break Prefab", false, 1)]
		static void BreakPrefabObject()
		{
			GameObject disconnectingObj = Selection.activeGameObject;
			Selection.activeGameObject = null;
			PrefabUtility.DisconnectPrefabInstance(disconnectingObj);
			UnityEngine.Object prefab = PrefabUtility.CreateEmptyPrefab("Assets/dummy.prefab");
			PrefabUtility.ReplacePrefab(disconnectingObj, prefab, ReplacePrefabOptions.ConnectToPrefab);
			PrefabUtility.DisconnectPrefabInstance(disconnectingObj);
			AssetDatabase.DeleteAsset("Assets/dummy.prefab");
			Selection.activeObject = disconnectingObj;
		}