private async Task TestSend2()
        {
            try
            {
                //await MessageBroadcast.ToAllClients("subj here", "test MessageBroadcast.ToAllClients");
                await MBHub.BroadcastToAll("subj here", "test MessageBroadcast.ToAllClients");

                CommonLogs.Add("MessageBroadcast sent");
            }
            catch (Exception ex)
            {
                CommonLogs.Add(ex);
            }
        }
        private async Task TestSend1()
        {
            try
            {
                //await MessageBroadcast.RequestClientStates();
                await MBHub.All.RequestClientState();

                CommonLogs.Add("Sent request for client states.");
            }
            catch (Exception ex)
            {
                CommonLogs.Add(ex);
            }
        }