/// <summary>
/// 使用Let's Encrypt服務，先檢查<see cref="CertificatePath"/>是否過期，如過期則重新取得憑證儲存，並設為Kestrel使用的憑證
/// </summary>
/// <param name="options">Kestrel伺服器監聽選項實例</param>
/// <param name="savePassword">憑證儲存密碼</param>
/// <param name="email">電子郵件</param>
/// <param name="domains">網域</param>
/// <returns>可等侯程序</returns>
public static async Task UseLetsEncryptAndSaveAsync(this ListenOptions options, string savePassword, string email, params string[] domains)
{
await options.UseLetsEncryptAsyncBase(savePassword, email, domains);
}
public static async Task UseLetsEncryptAsync(this ListenOptions options, string email, params string[] domains)
{
await options.UseLetsEncryptAsyncBase(null, email, domains);
}
