// AlertBuilder.swift

private var alertTitle: String?
private var confirmAction: AlertAction?
private var cancelAction: AlertAction?
...
func setTitle(_ alertTitle: String) -> AlertBuilder {
    self.alertTitle = alertTitle
    return self
}

func setConfirmAction(_ text: String, action: (() -> Void)? = nil) -> AlertBuilder {
    self.confirmAction = AlertAction(text: text, action: action)
    return self
}

func setCancelAction(_ text: String, action: (() -> Void)? = nil) -> AlertBuilder {
    self.cancelAction = AlertAction(text: text, action: action)
    return self
}

@discardableResult
func build() -> Self {
    alertViewController.modalPresentationStyle = .overFullScreen
    alertViewController.modalTransitionStyle = .crossDissolve
    
    alertViewController.alertTitle = alertTitle
    alertViewController.confirmAction = confirmAction
    alertViewController.cancelAction = cancelAction
    
    baseViewController.present(alertViewController, animated: true)
    return self
}
...

// MyAccountViewController.swift
...
rootView.logoutButton
    .tapPublisher
    .sink { [weak self] in
        guard let self else { return }
        
        AlertBuilder(viewController: self)
            .setTitle("로그아웃 하시겠습니까?")
            .setConfirmAction("확인") {
                self.logoutButtonDidTapSubject.send()
            }
            .setCancelAction("취소")
            .build()
    }
    .store(in: cancelBag)