@property<EOL><INDENT>def expires_at(self):<DEDENT>
return self._expires_at<EOL>
Gets 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\".

:return: The expires_at of this CreateMobileAuthorizationCodeResponse.
:rtype: str