def update(self, attributes=values.unset, date_created=values.unset,<EOL>date_updated=values.unset):
return self._proxy.update(<EOL>attributes=attributes,<EOL>date_created=date_created,<EOL>date_updated=date_updated,<EOL>)<EOL>
Update the ParticipantInstance

:param unicode attributes: An optional string metadata field you can use to store any data you wish.
:param datetime date_created: The date that this resource was created.
:param datetime date_updated: The date that this resource was last updated.

:returns: Updated ParticipantInstance
:rtype: twilio.rest.messaging.v1.session.participant.ParticipantInstance