code: def compute_taxes(self, precision=None):
          '''
          Returns the total amount of taxes for this group.
          @param precision: int Number of decimal places
          @return: Decimal
          '''
          return sum([group.compute_taxes(precision) for group in self.__groups]f compute_taxes(self, precision=None):
          '''
          Returns the total amount of taxes for this group.
          @param precision: int Number of decimal places
          @return: Decimal
          '''
          return sum([group.compute_taxes(precision) for group in self.__groups])
docs: Returns the total amount of taxes for this group.
          @param precision: int Number of decimal places
          @return: Decimal