public void Execute(object parameter)
        {
            var viewModel = parameter as SettingsViewModel;

            if (viewModel == null)
            {
                throw new ArgumentException(@"Invalid ViewModel ", "parameter");
            }
            _saveService.SaveCredentials(viewModel.MattermostUrl, viewModel.TeamId, viewModel.Username, viewModel.Version);
            _saveService.SaveChannels(string.Empty);
            _window.Close();
        }
        public async Task OnRefreshChannelListClick(Office.IRibbonControl control)
        {
            try
            {
                var session = await _sessionRepository.RestoreSession();

                var channelList = await Task.Run(() => session.GetChannels());

                var channelSettings = new ChannelListSetting
                {
                    Channels = channelList.Select(x => x.ToSetting()).ToList()
                };
                var channelMap = JsonConvert.SerializeObject(channelSettings);
                await Task.Run(() => _settingsSaveService.SaveChannels(channelMap));
            }
            catch (MattermostException mex)
            {
                _errorDisplay.Display(mex);
            }
            catch (Exception exception)
            {
                _errorDisplay.Display(exception);
            }
        }