code: func (c CreatedBy) String() string {
  	if c.User.Name == "" {
  		return "system"
  	}
  	if c.Connector != nil {
  		return fmt.Sprintf("%v connector %v for user %v at %v",
  			c.Connector.Type, c.Connector.ID, c.Connector.Identity, utils.HumanTimeFormat(c.Time))
  	}
  	return fmt.Sprintf("%v at %v", c.User.Name, c.Time)
  }
docs: // String returns human readable information about the user