@ready_at.setter<EOL><INDENT>def ready_at(self, ready_at):<DEDENT>
self._ready_at = ready_at<EOL>
Sets the ready_at of this OrderFulfillmentPickupDetails.
The [timestamp](#workingwithdates) in RFC3339 timestamp format, e.g., \"2016-09-04T23:59:33.123Z\", indicating when the merchant set the fulfillment as ready for pickup.

:param ready_at: The ready_at of this OrderFulfillmentPickupDetails.
:type: str