Google云存储,对象插入?

When I r.FormFile("name") from the *http.Request I get a file (f), file header (fh) and an error (err). When I try to save the object into a bucket with :

service.Objects.Insert("bucketName", f).Do()

I get a mismatch of types, multipart.File != *storage.Object

I suspect I might have to io.Copy...