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

        if self._id_ is not None:
            return False

        if self._amount is not None:
            return False

        if self._alias is not None:
            return False

        if self._counterparty_alias is not None:
            return False

        if self._description is not None:
            return False

        if self._merchant_reference is not None:
            return False

        if self._type_ is not None:
            return False

        if self._attachment is not None:
            return False

        return True
:rtype: bool