!7

sclass A {
  class Inner {
    void check {
      print("Father: " + A.this);
      assertNotNull(A.this);
      print("OK");
    }
  }
}

sclass B extends A {
  class Inner extends A.Inner {
  }
  
  *() { new Inner; }
}

p-exp {
  new B().new Inner().check();
  restructure(new B().new Inner()).check();
}