public NSMutableAttributedStringWrapper(string data)
 {
     s = new NativeNSMutableAttributedString(data);
 }
 public static void AddAttributes(this NativeNSMutableAttributedString s, NativeCTStringAttributes a, StringRange r)
 {
     s.AddAttributes(a, new NSRange(r.Location, r.Length));
 }
 public NSMutableAttributedStringWrapper(NativeNSMutableAttributedString ns)
 {
     s = ns;
 }