public static void UpdateLocalization(this ContentPageData data)
 {
     if (data.NavData != null)
     {
         data.NavData.Text = (string)Manager <LanguageCultureInfo> .StaticInstance.GetResource(data.LocalizedKey);
     }
 }
 public static void UpdateTheme(this ContentPageData data)
 {
     if (data.NavData != null)
     {
         data.NavData.ImageSource = new Uri(
             new Uri(Assembly.GetExecutingAssembly().Location),
             (string)Manager <ThemeCultureInfo> .StaticInstance.GetResource(data.ImageKey));
     }
 }