public UnSubscribeFromAPNS AsUnSubscribeCommand()
 {
     var id = new APNSSubscriptionId(Token);
     return new UnSubscribeFromAPNS(id, UserId, Token);
 }
 public SubscribeForAPNS AsSubscribeCommand()
 {
     var id = new APNSSubscriptionId(Token);
     return new SubscribeForAPNS(id, UserId, Token);
 }