Implement Interface Using Super

[Jonathan Levi via Digitalmars-d-learn]

This works in LDC but not DMD?

```
class A : B, I {
    alias i = typeof(super).i;
}
class B {
    void i() {
        writeln("i");
    }
}
interface I {
    void i();
}
```
Is this a bug in DMD or in LDC?  How can I get this effect 
correctly?