[object, uuid(00000000-0000-0000-0000-000000000081)]
interface IX : IUnknown {
  void F(int x);
}

[object, uuid(00000000-0000-0000-0000-000000000082), pointer_default(ref)]
interface IY : IUnknown {
  HRESULT_int G(int x);
  HRESULT_bool H();
  HRESULT K([out,string*] char ** str);
}

[pointer_default(ref)] interface Test {

IUnknown * create_instance(void);
void test_component(IUnknown * c);
void test_ix(IX * c);
void test_iy(IY * c);

}