public HomeCinema(int id, Tv tv, Loudspeakers loudspeakers)
     : base(id)
 {
     Tv = tv;
     Loudspeakers = loudspeakers;
 }
 public virtual void StopRecording()
 {
     Tv.StopRecording();
 }
 public override void Off()
 {
     base.Off();
     Tv.Off();
     Loudspeakers.Off();
 }
 public virtual void StartRecording()
 {
     Tv.StartRecording();
 }
 public void MuteOff()
 {
     Tv.MuteOff();
     Loudspeakers.MuteOff();
 }
 public void DecreaseVolume()
 {
     Tv.DecreaseVolume();
     Loudspeakers.DecreaseVolume();
 }
 public virtual void AddVolume()
 {
     Tv.AddVolume();
     Loudspeakers.AddVolume();
 }
 public HomeCinema(int id, Tv tv, Loudspeakers loudspeakers)
     : base(id)
 {
     Tv           = tv;
     Loudspeakers = loudspeakers;
 }