def METHOD_NAME(NotificationTemplate, NotificationTemplateTranslation):
    for notification_type in NOTIFICATION_TYPES:
        notification, created = NotificationTemplate.objects.get_or_create(type=notification_type)
        if created:
            for language in ('fi', 'en'):
                subject = _get_text(notification_type, language, 'subject')
                body = _get_text(notification_type, language, 'body')
                body = _append_header_and_footer(body, language)
                NotificationTemplateTranslation.objects.create(
                    master_id=notification.id,
                    language_code=language,
                    subject=subject,
                    body=body,
                )