download.go
func ToWriter(src string, w io.Writer, options Options) error {
	u, err := url.Parse(src)
	if err != nil {
		return errors.Wrap(err, "invalid src URL")
	}
	return FromURL(u, w, options)
}
func ToWriter(src string, w io.Writer, options Options) error {
	u, err := url.Parse(src)
	if err != nil {
		return errors.Wrap(err, "invalid src URL")
	}
	return FromURL(u, w, options)
}
func ToWriter ( src string , w io . Writer , options Options ) error { u , err := url . Parse ( src ) if err != nil { return errors . Wrap ( err , " " ) } return FromURL ( u , w , options ) }
// ToWriter downloads the specified `src` URL to `w` writer using
// the specified `Options`.
ToWriter downloads the specified src URL to w writer using the specified Options .