@created_at.setter<EOL><INDENT>def created_at(self, created_at):<DEDENT>
self._created_at = created_at<EOL>
Sets the created_at of this V1TimecardEvent.
The time when the event was created, in ISO 8601 format.

:param created_at: The created_at of this V1TimecardEvent.
:type: str