def is_all_field_none(self):
        """
        :rtype: bool
        """

        if self._uuid is not None:
            return False

        if self._type_ is not None:
            return False

        if self._second_line is not None:
            return False

        if self._expiry_date is not None:
            return False

        if self._status is not None:
            return False

        if self._label_user is not None:
            return False

        return True
:rtype: bool