code: func (d *driver) GetContent(ctx context.Context, path string) ([]byte, error) {
  	content, err := d.Conn.ObjectGetBytes(d.Container, d.swiftPath(path))
  	if err == swift.ObjectNotFound {
  		return nil, storagedriver.PathNotFoundError{Path: path}
  	}
  	return content, err
  }
docs: // GetContent retrieves the content stored at "path" as a []byte.