public MessageHub(IUnitOfWork unitOfWork,
IMapper mapper,
IHubContext <PresenceHub> precenseHub,
PrecenseTracker tracker)
{
_mapper = mapper;
_precenseHub = precenseHub;
_tracker = tracker;
_unitOfWork = unitOfWork;
}
public PresenceHub(PrecenseTracker tracker)
{
_tracker = tracker;
}