def METHOD_NAME():
    relayer = Relayer(BaseClass, [Protocol.MRP, Protocol.DMAP, Protocol.AirPlay])
    relayer.register(SubClass4("airplay"), Protocol.AirPlay)
    relayer.register(SubClass4("mrp"), Protocol.MRP)
    relayer.register(SubClass4("dmap"), Protocol.DMAP)
    relayer.takeover(Protocol.AirPlay)
    assert (
        relayer.relay("no_args", [Protocol.DMAP, Protocol.MRP, Protocol.AirPlay])()
        == "airplay"
    )