X_in.java

interface I {
    void foo(Y<String>.Z z, int x);
}
public class X  {
    public static void main(String [] args) {
        I i = Y<String>.@Marker Z::foo;
        i.foo(new Y<String>().new Z(), 10); 
        Zork z;
    }
}
class Y<T> {
    class Z {
        void foo(int x) {
	    System.out.println(x);
        }
    }
}