newSubscriberFan :: GCompare k => FanSubscribed k -> IO (Subscriber (DMap k))
newSubscriberFan subd = return $! SubscriberFan subd
newSubscriberFan :: GCompare k => FanSubscribed k -> IO (Subscriber (DMap k))
newSubscriberFan subd = return $! SubscriberFan subd
newSubscriberFan subd = return $! SubscriberFan subd