public bool TryGoBack()
        {
            if (!CanGoBack)
            {
                return(false);
            }


            var destination = BackStack.LastOrDefault();

            if (destination == null)
            {
                return(false);
            }

            BackStack.Remove(destination);


            AddToForwardStack(
                CurrentViewModel,
                CurrentContent);


            SetCurrent(
                destination.ViewModel,
                destination.Content);


            return(true);
        }