code: func (s *storage) StreamBlobs(ctx context.Context, dest chan<- blobserver.BlobAndToken, contToken string) (err error) {
  	return blobserver.NewMultiBlobStreamer(
  		smallBlobStreamer{s},
  		largeBlobStreamer{s},
  	).StreamBlobs(ctx, dest, contToken)
  }
docs: // StreamBlobs impl.