No "Exporting non-public type through public API" inspection!?

Hey there,

today I got a complaint from a colleague of mine about some code I write 5 years ago:

interface Filter {
  ...
}

public interface MyInterface {
Object get(Filter filter);
}

So I created a public API which can not be used outside the package because I can not call the methode as the parameter Filter is not public.

Funny thing is that his Netbeans mark it with warning: "Exporting non-public type through public API". I can't find such an inspection in IDEA Ultimate 13.

How is it possible that his stupid Netbeans beat my supirioir IDE?! :D

PS: If the method would return a non public Interface then IDEA would mark it because there is a inspection for that case.