如何使用字符串的NSRegularExpression选项替换组的匹配项？

import Foundation

let inputString = "Hello, my name is John. I like apples."
let pattern = "(\\b\\w+\\b)"

do {
    let regex = try NSRegularExpression(pattern: pattern, options: [])
    let matches = regex.matches(in: inputString, options: [], range: NSRange(location: 0, length: inputString.utf16.count))
    
    var resultString = inputString
    
    for match in matches {
        let range = match.range(at: 0)
        let matchString = (inputString as NSString).substring(with: range)
        let replacement = "replacement" // 替换为你想要的内容
        
        let replacedString = regex.replacementString(for: match, in: resultString, offset: 0, template: replacement)
        resultString = resultString.replacingCharacters(in: Range(range, in: resultString)!, with: replacedString)
    }
    
    print("替换结果：\(resultString)")
} catch {
    print("正则表达式错误：\(error)")
}