如何从NSSearchField中删除选中/突出显示的字符串？(Swift)

NotificationCenter.default.addObserver(self, selector: #selector(searchFieldTextDidChange), name: NSControl.textDidChangeNotification, object: searchField)

@objc func searchFieldTextDidChange(_ notification: Notification) {
    guard let searchField = notification.object as? NSSearchField else { return }
    
    let selectedRange = searchField.currentEditor()?.selectedRange()
    if let range = selectedRange {
        let mutableString = NSMutableAttributedString(attributedString: searchField.attributedStringValue)
        mutableString.replaceCharacters(in: range, with: "")
        
        // 更新NSSearchField中的文本
        searchField.attributedStringValue = mutableString
    }
}