jabber.connection.ConferenceManager.GetRoom C# (CSharp) Method

        public Room GetRoom(JID roomAndNick)
        {
            if (roomAndNick == null)
                throw new ArgumentNullException("roomAndNick");

            if (roomAndNick.Resource == null)
                roomAndNick.Resource = DefaultNick;

            if (m_rooms.ContainsKey(roomAndNick))
                return m_rooms[roomAndNick];

            // If no resource specified, pick up the user's name from their JID
            if (roomAndNick.Resource == null)
                roomAndNick.Resource = m_stream.JID.User;

            Room r = new Room(this, roomAndNick);
            r.OnJoin += OnJoin;
            r.OnLeave += OnLeave;
            r.OnPresenceError += OnPresenceError;
            r.OnRoomConfig += OnRoomConfig;
            r.OnRoomMessage += OnRoomMessage;
            r.OnPrivateMessage += OnPrivateMessage;
            r.OnAdminMessage += OnAdminMessage;
            r.OnSelfMessage += OnSelfMessage;
            r.OnSubjectChange += OnSubjectChange;
            r.OnParticipantJoin += OnParticipantJoin;
            r.OnParticipantLeave += OnParticipantLeave;
            r.OnParticipantPresenceChange += OnParticipantPresenceChange;
            r.OnPresenceChange += OnPresenceChange;

            m_rooms[roomAndNick] = r;
            return r;
        }

        public void HasRoomTest()
        {
            cm = new ConferenceManager();
            cm.Stream = stream;

            bool roomExists = cm.HasRoom(jid);
            Assert.IsFalse(roomExists);

            cm.GetRoom(jid);
            roomExists = cm.HasRoom(jid);
            Assert.IsTrue(roomExists);
        }