def update(self, status=values.unset, announce_url=values.unset,
               announce_method=values.unset):
        """
        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
        """
        data = values.of({'Status': status, 'AnnounceUrl': announce_url, 'AnnounceMethod': announce_method, })

        payload = self._version.update(
            'POST',
            self._uri,
            data=data,
        )

        return ConferenceInstance(
            self._version,
            payload,
            account_sid=self._solution['account_sid'],
            sid=self._solution['sid'],
        )
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