@plan_id.setter<EOL><INDENT>def plan_id(self, plan_id):<DEDENT>
self._plan_id = plan_id<EOL>
Sets the plan_id of this RenewTokenResponse.
The ID of the [subscription](https://docs.connect.squareup.com/api/connect/v1/#navsection-subscriptionmanagement) plan the merchant signed up for. Only present if the merchant signed up for a subscription during authorization.

:param plan_id: The plan_id of this RenewTokenResponse.
:type: str