def update(self, status=values.unset, announce_url=values.unset,<EOL>announce_method=values.unset):
return self._proxy.update(status=status, announce_url=announce_url, announce_method=announce_method, )<EOL>
Update the ConferenceInstance

:param ConferenceInstance.UpdateStatus status: The new status of the resource
:param unicode announce_url: The URL we should call to announce something into the conference
:param unicode announce_method: he HTTP method used to call announce_url

:returns: Updated ConferenceInstance
:rtype: twilio.rest.api.v2010.account.conference.ConferenceInstance