我正在尝试使用PropertWrapper进行电子邮件验证。 但是当我尝试用空字符串初始化eamilId变量时，我得到了错误:调用中的参数标签不正确（have'wrapped value:'，应为'email id:')

下面是我的视图控制器的代码

class ViewController: UIViewController {
    var name: String = ""
    @EmailWrapper var emailId: String = ""

  override func viewDidLoad() {
    super.viewDidLoad()
    name = "User Name"
    emailId = "user123@gmail.com"
    updateUserDetails()
  }

  func updateUserDetails() {
    if name.isEmpty || emailId.isEmpty {
        print("Please enter valid Name and emailId")
    }
    else {
        print("User data updated successfully")
    }
  }
}

属性包装的代码是

@propertyWrapper
struct EmailWrapper {
    private var value = ""
    var wrappedValue: String {
        set {
            value = newValue
        }
        get {
            return isValidEmail(value) ? value : ""
        }
    }

    init(emailId: String) {
        self.value = emailId
    }
    private func isValidEmail(_ email: String) -> Bool {
        let emailRegEx = "[A-Z0-9a-z._%+-]+@[A-Za-z0-9.-]+\\.[A-Za-z]{2,64}"
        let emailPred = NSPredicate(format:"SELF MATCHES %@", emailRegEx)
        return emailPred.evaluate(with: email)
    }
}

在使用EmailWrapper时，如何在ViewController中用默认值（String（））初始化emailId