PrefabUtility.ResetToPrefabState
static function ResetToPrefabState(obj: Object): bool;
static bool ResetToPrefabState(Object obj);
static def ResetToPrefabState(obj as Object) as bool
Description

Resets the properties of the component or game object to the parent prefab state.

All overrides will be cleared. However the transform.position and rotation of a root game object in a prefab instance will never be cleared.
	// Try to set the selected GameObject to a prefab state
	
	@MenuItem("Examples/Attempt to reset to prefab %r")
	static function Reset() {
		if(PrefabUtility.ResetToPrefabState(Selection.activeGameObject))
			Debug.Log("Reseted to prefab state successfully!");
		else
			Debug.LogError("Couldnt reset to a prefab state " + Selection.activeGameObject.name);
	}
	@MenuItem("Examples/Attemp to reset to prefab %r", true)
	static function CheckReset() {
		return Selection.activeGameObject != null;
	}