If omitted the AI will tend to keep the form of address as seen in the given inputs. Only available for da-DK, fr-FR, de-DE, de-AT, de-CH, it-IT, pl-Pl, pt-PT, es-ES, ru-RU, cs-CZ. The form of address in other languages are not supported and will result in an error.
INFORMAL_LOWERCASE is only available for: