code: def save(self, *args, **kwargs):
          
          if not self.id:
              self.is_public = settings.COMMENTS_DEFAULT_APPROVED
              self.site_id = current_site_id()
          super(ThreadedComment, self).save(*args, **kwargs)
docs: Set the current site ID, and ``is_public`` based on the setting
          ``COMMENTS_DEFAULT_APPROVED``.