NSAttributedString in swift 5

Solution:

swift 4:

try NSAttributedString(data: Data(utf8), options: [NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType, NSCharacterEncodingDocumentAttribute: String.Encoding.utf8.rawValue], documentAttributes: nil)

swift 5:

return try NSAttributedString(data: Data(utf8), options: [NSAttributedString.DocumentReadingOptionKey.documentType: String.Encoding.utf8.rawValue], documentAttributes: nil)