private ServiceClient(ServiceOption option, IFfmpeg ffmpeg, HttpMessageHandler httpMessageHandler)
 {
     _option     = option;
     _ffmpeg     = ffmpeg;
     _httpClient = new HttpClient(httpMessageHandler);
     _httpClient.DefaultRequestHeaders.TryAddWithoutValidation("User-Agent", "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36");
 }
 public ServiceClient(ServiceOption option, IFfmpeg ffmpeg)
     : this(option, ffmpeg, new HttpClientHandler {
     UseCookies = true
 })
 {
 }