@property<EOL><INDENT>def idempotency_key(self):<DEDENT>
return self._idempotency_key<EOL>
Gets the idempotency_key of this CreateRefundRequest.
A value you specify that uniquely identifies this refund among refunds you've created for the tender.  If you're unsure whether a particular refund succeeded, you can reattempt it with the same idempotency key without worrying about duplicating the refund.  See [Idempotency](/basics/api101/idempotency) for more information.

:return: The idempotency_key of this CreateRefundRequest.
:rtype: str