public void execute()
 {
     _stereo.On();
     _priorSetting = _stereo.setting;
     _stereo.SetCd();
     _priorVolume = _stereo.volume;
     _stereo.SetVolume(11);
 }
 public void execute()
 {
     _stereo.On();
     _stereo.SetCd();
     _stereo.SetVolume(11);
 }