code: func NewKeyring(orgID, projectID *identity.ID, pathExp *pathexp.PathExp) *Keyring {
  	return &Keyring{
  		BaseKeyring: BaseKeyring{
  			Created:   time.Now().UTC(),
  			OrgID:     orgID,
  			PathExp:   pathExp,
  			ProjectID: projectID,
  
  			// This is the first instance of the keyring, so version is 1,
  			// and there is no previous instance.
  			Previous:       nil,
  			KeyringVersion: 1,
  		},
  	}
  }
docs: // NewKeyring returns a new v2 Keyring, with the created time set to now