download

type Downloader struct {
	HTTPClient HTTPClient
}

type HTTPClient interface {
	Get(url string) (resp *http.Response, err error)
}

type ProgressBar interface {
	Finish()
	NewProxyReader(r io.Reader) *pb.Reader
	SetTotal(total int) *pb.ProgressBar
	Start() *pb.ProgressBar
}

type RawHTTPStatusError struct {
	Status      string
	RawResponse []byte
}