def date_added(self, date_added):
        """
        Updates the security labels date_added

        Args:
            date_added: Converted to %Y-%m-%dT%H:%M:%SZ date format
        """
        date_added = self._utils.format_datetime(date_added, date_format='%Y-%m-%dT%H:%M:%SZ')

        self._data['dateAdded'] = date_added
        request = self._base_request
        request['dateAdded'] = date_added
        return self._tc_requests.update(request, owner=self.owner)
Updates the security labels date_added

        Args:
            date_added: Converted to %Y-%m-%dT%H:%M:%SZ date format