@property
def subtotal_price_item(self):
    if (self._subtotal_price_item is None):
        raise ValueError('Subtotal price item on shipping handling row is not allowed empty.')
    return self._subtotal_price_item
@property
def subtotal_price_item(self):
    if (self._subtotal_price_item is None):
        raise ValueError('Subtotal price item on shipping handling row is not allowed empty.')
    return self._subtotal_price_item