interface I
{
  enum T { Yes, No };

  in T e();

  behaviour
  {
    on e:
    {
      [true] { reply(T.Yes); }
    }
  }
}

component ReplyTwo
{
  provides I p;

  behaviour
  {
    on p.e(): {
      reply(I.T.Yes);
      reply(I.T.No);
    }
  }
}