func baselineOffset(_ baselineOffset: Float, range: NSRange? = nil) -> NSAttributedString {
        let mutableAttributedString = NSMutableAttributedString(string: string, attributes: attributes())
        mutableAttributedString.addAttribute(NSAttributedString.Key.baselineOffset, value: baselineOffset, range: attributedStringRange(range))
        return mutableAttributedString as NSAttributedString
    }