HTML to NSAttributedString

func convertHtml() -> NSAttributedString{
        if let theData = self.data(using: .utf16) {
            do {
                let theString = try NSAttributedString(data: theData, options: [.documentType: NSAttributedString.DocumentType.html], documentAttributes: nil)
                return NSAttributedString(attributedString: theString)
            } catch {  print("\(error)")  }
        }
        return NSAttributedString(self)
    }