private static List <UILabel> AddCodeHourLabels(UIView rootView, int fontSize)
        {
            var codeHourString = "code hour";
            var codeHourChars  = codeHourString.ToCharArray();
            var labels         = codeHourChars
                                 .Select(ch => rootView.AddLabel(ch.ToString(), fontSize, UIColor.FromRGB(121, 226, 131)))
                                 .ToList();

            return(labels);
        }