public static void Bind(this BindingService service, object target, string propName, string path, IValueConverter converter)
        {
            var binding = new BindingInfo(propName, path, converter);

            service.Bind(target, binding);
        }
        public static void Bind(this BindingService service, object target, string propName, string path)
        {
            var binding = new BindingInfo(propName, path);

            service.Bind(target, binding);
        }