def total_tax_amounts(self):
        """
        Gets the total tax amounts associated with this upcoming invoice.
        :return:
        """
        return QuerySetMock.from_iterable(
            DjstripeUpcomingInvoiceTotalTaxAmount, self._total_tax_amounts
        )

        Gets the total tax amounts associated with this upcoming invoice.
        :return:
        
djstripe/models/billing.py