public override void ViewDidAppear(bool animated)
 {
     base.ViewDidAppear(animated);
     VisitableDelegate?.ViewDidAppear(this);
 }
 public void ReloadVisitable()
 {
     VisitableDelegate?.DidRequestReload(this);
 }
 public void VisitableViewDidRequestRefresh()
 {
     VisitableDelegate?.DidRequestRefresh(this);
 }