using HtmlToPdfService.Core.Models; namespace HtmlToPdfService.Core.Services; /// /// 回调服务接口 /// public interface ICallbackService { /// /// 发送回调 /// /// 回调 URL /// 回调负载 /// 自定义 Headers /// 取消令牌 Task SendCallbackAsync( string callbackUrl, CallbackPayload payload, Dictionary? customHeaders = null, CancellationToken cancellationToken = default); }