How to save rotation with PlayerPrefsX?

I finally was able to save an object's position with PlayerPrefsX.SetVector3 and PlayerPrefsX.GetVector3. But I also want to save rotation, and since rotation is not a vector3 but a quaternion, it appears i can't do that with PlayerPrefsX. Does anyone know if there is a way with PlayerPrefsX or anything else with PlayerPrefs?

Store transform.eulerAngles instead, then put it back into transform.eulerAngles when you load