Finding all the interfaces and their inheritance relationships at runtime

[Jean-Louis Leroy via Digitalmars-d-learn]

I know how to find all the classes:

    foreach (mod; ModuleInfo) {
      foreach (c; mod.localClasses) {
        // use c.base to construct inheritance graph
      }
    }
Can I do the same with all the interfaces? Looking at object.d 
gives no clue...