@discount_id.setter<EOL><INDENT>def discount_id(self, discount_id):<DEDENT>
self._discount_id = discount_id<EOL>
Sets the discount_id of this V1PaymentDiscount.
The ID of the applied discount, if available. Discounts applied in older versions of Square Register might not have an ID.

:param discount_id: The discount_id of this V1PaymentDiscount.
:type: str