code: func (d *driver) GetContent(ctx context.Context, path string) ([]byte, error) {
  	content, err := d.Bucket.Get(d.ossPath(path))
  	if err != nil {
  		return nil, parseError(path, err)
  	}
  	return content, nil
  }
docs: // GetContent retrieves the content stored at "path" as a []byte.