UserManager.getConnectedUsersConnectionsID C# (CSharp) Method

    public List<int> getConnectedUsersConnectionsID()
    {
        lock (lockConnectedObject)
        {
            if (_clientsConnectedStatusUpdate)
            {
                _clientsConnectedCached = new List<int>();
                _clientsConnectedCached.AddRange(ConnectedClients.Keys);
                _clientsConnectedStatusUpdate = false;
            }
           
            return _clientsConnectedCached;
        }
    }