private void OnTagsButtonTouchUpInside (object sender, EventArgs e)
 {
     var controller = new TagSelectionViewController (ViewModel.WorkspaceId, ViewModel.TagList, this);
     NavigationController.PushViewController (controller, true);
 }
 private void OnTagsButtonTouchUpInside (object sender, EventArgs e)
 {
     var controller = new TagSelectionViewController (model);
     NavigationController.PushViewController (controller, true);
 }