code: func (n *ACIdentifier) UnmarshalJSON(data []byte) error {
  	var s string
  	if err := json.Unmarshal(data, &s); err != nil {
  		return err
  	}
  	nn, err := NewACIdentifier(s)
  	if err != nil {
  		return err
  	}
  	*n = *nn
  	return nil
  }
docs: // UnmarshalJSON implements the json.Unmarshaler interface