Black Box api sketch

blackbox.py

class MyModule(ecto.BlackBox):
    def __init__(self, start, step):
        ecto.BlackBox.__init__(self)
        self.generate = ecto_test.Generate(start=start, step=step)
        self.inc = ecto_test.Increment()
    def _outputs(self):
        return {"out":self.inc["out"]}
    def _parameters(self):
        return {
                "start":self.generate["start"],
                "step":self.generate["step"]
                }
    def connections(self):
        return (self.generate["out"] >> self.inc["in"])