nsattributedstring link url extension

extension NSMutableAttributedString {
    @discardableResult
    func setAsLink(_ textToFind: String, linkURL: String) -> Bool {
        let foundRange = mutableString.range(of: textToFind)
        guard foundRange.location != NSNotFound else { return false }
        addAttribute(NSAttributedStringKey.link, value: linkURL, range: foundRange)
        return true
    }
}