How to check the actor is Leveled NPC or not by Papyrus?

[greenmango12]

Hi is there way, by script to check the Actor is leveled NPC or not? At first I thought  use  isUnique() , but it can not check the Actor is leveled NPC or not. 

 

Next I found,  GetLeveledActorBase(), but it seems return Base even though the actor is not Leveled NPC,  (I expect it will return false for non Leveled NPC actor, but not ..

 

So how you check the Actor is leveled NPC, by papyrus?  or Is there custom function, someone made?  Practical case is really welcom...