downloadFile method
Download the File.
Throws a http.ClientException if there were problems communicating with
the API service. Throws a ServiceException if the API method failed for
any reason.
Implementation
@override
Future<DownloadFileResponse> downloadFile(DownloadFileRequest request) async {
if (isClosed) throw StateError('Service is closed');
if (_downloadFile case final downloadFile?) {
return downloadFile(request);
}
throw UnsupportedError('downloadFile');
}