def update(self, role_sid=values.unset,
               last_consumed_message_index=values.unset,
               last_consumption_timestamp=values.unset, date_created=values.unset,
               date_updated=values.unset, attributes=values.unset):
        """
        Update the MemberInstance

        :param unicode role_sid: The SID of the Role to assign to the member
        :param unicode last_consumed_message_index: The index of the last consumed Message for the Channel for the Member
        :param datetime last_consumption_timestamp: The ISO 8601 based timestamp string representing the date-time of the last Message read event for the Member within the Channel
        :param datetime date_created: The ISO 8601 date and time in GMT when the resource was created
        :param datetime date_updated: The ISO 8601 date and time in GMT when the resource was updated
        :param unicode attributes: A valid JSON string that contains application-specific data

        :returns: Updated MemberInstance
        :rtype: twilio.rest.chat.v2.service.channel.member.MemberInstance
        """
        return self._proxy.update(
            role_sid=role_sid,
            last_consumed_message_index=last_consumed_message_index,
            last_consumption_timestamp=last_consumption_timestamp,
            date_created=date_created,
            date_updated=date_updated,
            attributes=attributes,
        )
Update the MemberInstance

        :param unicode role_sid: The SID of the Role to assign to the member
        :param unicode last_consumed_message_index: The index of the last consumed Message for the Channel for the Member
        :param datetime last_consumption_timestamp: The ISO 8601 based timestamp string representing the date-time of the last Message read event for the Member within the Channel
        :param datetime date_created: The ISO 8601 date and time in GMT when the resource was created
        :param datetime date_updated: The ISO 8601 date and time in GMT when the resource was updated
        :param unicode attributes: A valid JSON string that contains application-specific data

        :returns: Updated MemberInstance
        :rtype: twilio.rest.chat.v2.service.channel.member.MemberInstance