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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def getDiscountAmount(self):
 """It computes and returns the analysis service's discount amount without VAT """

        has_client_discount = self.aq_parent.getMemberDiscountApplies()
        if has_client_discount:
            discount = Decimal(self.getDefaultMemberDiscount())
            return Decimal(self.getSubtotal() * discount / 100)
        else:
            return 0