private async void LoadActivatedServicesAsync()
        {
            // Check for user's feature flags
            if (!viewModel.IsTwitterPreferenceSet)
            {
                var result = await DisplayAlert(AppResources.TwitterAlertTitle,
                                                AppResources.TwitterAlertMessage,
                                                AppResources.TwitterAlertOkButton,
                                                AppResources.TwitterAlertCancelButton)
                             .ConfigureAwait(false);

                viewModel.SetTwitterPreference(result);
            }

            // Request initial data load.
            viewModel.LoadData();
        }