public override ICollection <Tuple <int, int> > GetRanges(TextFormatInfo info) => info.Bolds;
public override void SetRanges(TextFormatInfo info, ICollection <Tuple <int, int> > ranges) => info.StrikeThroughs = ranges;
public override void SetRanges(TextFormatInfo info, ICollection <Tuple <int, int> > ranges) => info.Bolds = ranges;