@expires_at.setter<EOL><INDENT>def expires_at(self, expires_at):<DEDENT>
self._expires_at = expires_at<EOL>
Sets the expires_at of this CreateMobileAuthorizationCodeResponse.
The timestamp when `authorization_code` expires in [RFC 3339](https://tools.ietf.org/html/rfc3339) format, e.g., \"2016-09-04T23:59:33.123Z\".

:param expires_at: The expires_at of this CreateMobileAuthorizationCodeResponse.
:type: str