Context constructor
      
      Context({ 
    
    
- required VoiceRoomService service,
 - required WeakReference<
StreamController< toastSubject,String> > - required WeakReference<
StreamController< exitSubject,void> > - required WeakReference<
RoomManager> roomManager, - required WeakReference<
SeatManager> seatManager, - required WeakReference<
UserManager> userManager, - required WeakReference<
MediaManager> mediaManager, - required WeakReference<
IMObserver> imObserver, - required WeakReference<
LiveListObserver> liveListObserver, - required WeakReference<
RoomEngineObserver> roomEngineObserver, 
Implementation
Context(
    {required this.service,
    required this.toastSubject,
    required this.exitSubject,
    required this.roomManager,
    required this.seatManager,
    required this.userManager,
    required this.mediaManager,
    required this.imObserver,
    required this.liveListObserver,
    required this.roomEngineObserver});