/// <summary>
            /// If there are subsections in the hierarchy, navigate to those
            /// ASSUMES there are _never_ Categories hanging off the root in the hierarchy
            /// </summary>
            public override void RowSelected(UITableView tableView, NSIndexPath indexPath)
            {
                Speaker s = _speakers[indexPath.Row];
                SpeakerBioViewController bioView = new SpeakerBioViewController(s);

                bioView.Title = s.Name;
                _svc.NavigationController.PushViewController(bioView, true);
            }
 /// <summary>
 /// If there are subsections in the hierarchy, navigate to those
 /// ASSUMES there are _never_ Categories hanging off the root in the hierarchy
 /// </summary>
 public override void RowSelected(UITableView tableView, NSIndexPath indexPath)
 {
     Speaker s = _speakers[indexPath.Row];
     SpeakerBioViewController bioView = new SpeakerBioViewController(s);
     bioView.Title = s.Name;
     _svc.NavigationController.PushViewController(bioView, true);
 }