IOS -如何获得与设备同步的电子邮件id列表？

import MessageUI

let mailComposeViewController = MFMailComposeViewController()

mailComposeViewController.mailComposeDelegate = self

if MFMailComposeViewController.canAccessMailAccounts() {
    // 设备配置了邮件帐户
    // 继续下一步操作
} else {
    // 设备没有配置邮件帐户
    // 提示用户配置邮件帐户
}

func mailComposeController(_ controller: MFMailComposeViewController, didFinishWith result: MFMailComposeResult, error: Error?) {
    if result == .sent {
        // 电子邮件发送成功
        let emailIDs = MFMailComposeViewController.copyAllRecipients() as? [String]
        // emailIDs即为与设备同步的电子邮件ID列表
    }
    controller.dismiss(animated: true, completion: nil)
}