Flutter Dio : How to Upload Image?

In Dio latest version, UploadFileInfo method has been replaced by MultipartFile class. And here the way how to use to post image, video or any file:

Future<String> uploadImage(File file) async {
    String fileName = file.path.split("https://stackoverflow.com/").last;
    FormData formData = FormData.fromMap({
        "file":
            await MultipartFile.fromFile(file.path, filename:fileName),
    });
    response = await dio.post("/info", data: formData);
    return response.data['id'];
}