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

        if self._status is not None:
            return False

        if self._balance_preferred is not None:
            return False

        if self._balance_threshold_low is not None:
            return False

        if self._method_fill is not None:
            return False

        if self._issuer is not None:
            return False

        return True
:rtype: bool