code: func getImportedPolicyBody(c context.Context, name string) (*importedPolicyBody, error) {
  	e := &importedPolicyBody{
  		Parent: datastore.KeyForObj(c, &importedPolicyHeader{Name: name}),
  	}
  	switch err := datastore.Get(c, e); {
  	case err == datastore.ErrNoSuchEntity:
  		return nil, nil
  	case err != nil:
  		return nil, transient.Tag.Apply(err)
  	}
  	return e, nil
  }
docs: // getImportedPolicyBody loads importedPolicyBody entity from the datastore.
  //
  // Returns (nil, nil) if there's no such entity.