[Vala] Implementing interface methods

[Dominique Würtz <housirer gmx de>]

Hi,

here is another thing I did not get to work: Implementing a method of an 
interface.

public interface MyInterface {
   public void foo ();
}

public class MyClass : MyInterface {
   public void foo () {
   }
}

Compiling works, however the _interface_init() function stays empty.

Regards,

Dominique