protected override void AddElementsInCaseOfEmptyList(MonoTouch.Dialog.Section items)
        {
            if (!supplier.CredentialsStorage.IsLoggedIn) {
                base.AddElementsInCaseOfEmptyList (items);
                return;
            }

            var createTemplateSuggestion = new MultilineElement ("Sources was't found. Tap to create source spreadsheet at your Google Drive ");

            createTemplateSuggestion.Tapped += () => {
                this.ExecuteAsync (supplier.CreateTemplate,
                () => {
                    PopulateSources ();
                    var dialod = new UIAlertView ("Done", "Spreadsheet with name MemorizeIt was created at your Google Drive", null, "I got it!", null);
                    dialod.Show ();
                });
            };

            items.Add (createTemplateSuggestion);
        }