def update(self, date_expiry=values.unset, ttl=values.unset, mode=values.unset,<EOL>status=values.unset, participants=values.unset):
return self._proxy.update(<EOL>date_expiry=date_expiry,<EOL>ttl=ttl,<EOL>mode=mode,<EOL>status=status,<EOL>participants=participants,<EOL>)<EOL>
Update the SessionInstance

:param datetime date_expiry: The ISO 8601 date when the Session should expire
:param unicode ttl: When the session will expire
:param SessionInstance.Mode mode: The Mode of the Session
:param SessionInstance.Status status: The new status of the resource
:param dict participants: The Participant objects to include in the session

:returns: Updated SessionInstance
:rtype: twilio.rest.proxy.v1.service.session.SessionInstance