interface IFunctionCallReturnLocal
{
  in void doIt();
  out void done();
  out void skip();

  behaviour
  {
    enum Toggle {Ping, Pong};
    Toggle state = Toggle.Ping;

    bool shouldWeDoIt()
    {
      bool result = false;
      
      //result = (state == Toggle.Ping);

      if (state == Toggle.Ping)
      {
        result = true;
        return result;
      }
      else
      {
        return false;
      }

      return result;
    }

    on doIt:
    {
      bool localVariable = shouldWeDoIt();

      if (localVariable)
      {
        done;
        state = Toggle.Pong;
      }
      else
      {
        skip;
        state = Toggle.Ping;
      }
    }
  }
}