func(offset int64) (io.ReadCloser, error) {
					rs := &HTTPRangeSpec{
						IsSuffixLength: false,
						Start:          offset,
						End:            -1,
					}
					return getTransitionedObjectReader(rctx, bucket, object, rs, r.Header,
						objInfo, ObjectOptions{VersionID: objInfo.VersionID})
				},
				actualSize,
			)
			defer objectRSC.Close()