public PresenceHub(PresenceTracker tracker)
{
this.tracker = tracker;
}
public MessageHub(IUnitOfWork unitOfWork, IMapper mapper, IHubContext <PresenceHub> presenceHub, PresenceTracker tracker)
{
this.unitOfWork = unitOfWork;
this.tracker = tracker;
this.presenceHub = presenceHub;
this.mapper = mapper;
}