@Nullable
  public static TextRange mapBackTextBlockRange(@NotNull String text, int from, int to, int indent) {
    if (from > to || to < 0) return null;
    TextBlockModel model = TextBlockModel.create(text, indent);
    if (model == null) return null;
    return model.mapTextBlockRangeBack(from, to);
  }
@Nullable
  public static TextRange mapBackTextBlockRange(@NotNull String text, int from, int to, int indent)