extern int $int$;

interface ihello
{
  in void hello(int i, int j);

  behaviour
  {
    on hello: {}
  }
}

component helloparams
{
  provides ihello h;
  requires iworld w;

  behaviour
  {
    on h.hello(i, j): w.world(i, j);
  }
}

interface iworld
{
  in void world(int i, int j);

  behaviour
  {
    on world: {}
  }
}