internal void SetupAffiliations(MucRoom mucRoom, Affiliation affiliation)
        {
            lock (_affContacts._syncObject)
            {
                _affContacts.Clear();
            }

            _affiliation = affiliation;
            _mucRoom = mucRoom;

            NotifyPropertyChanged("Affiliation");

            _manager = Account.Instance.GetMucManager();

            _manager.RequestList(_affiliation, mucRoom.Service.Jid, OnRequestResult, null);
        }