public NSData GetFontTableData(CTFontTable table, CTFontTableOptions options)
        {
            IntPtr cfDataRef = CTFontCopyTable(handle, table, options);

            if (cfDataRef == IntPtr.Zero)
            {
                return(null);
            }
            var d = new NSData(cfDataRef);

            d.Release();
            return(d);
        }
 static extern IntPtr CTFontCopyTable(IntPtr font, CTFontTable table, CTFontTableOptions options);