code: func mkdirAs(path string, mode os.FileMode, owner Identity, mkAll, chownExisting bool) error {
  	if err := system.MkdirAll(path, mode, ""); err != nil {
  		return err
  	}
  	return nil
  }
docs: // This is currently a wrapper around MkdirAll, however, since currently
  // permissions aren't set through this path, the identity isn't utilized.
  // Ownership is handled elsewhere, but in the future could be support here
  // too.