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

        if self._tab is not None:
            return False

        if self._payment is not None:
            return False

        if self._request_reference_split_the_bill is not None:
            return False

        return True
def is_all_field_none ( self ) : if self . _tab is not None : return False if self . _payment is not None : return False if self . _request_reference_split_the_bill is not None : return False return True
:rtype: bool