'Update the QueueInstance
:param unicode friendly_name: A human readable description of the queue
:param unicode max_size: The max number of members allowed in the queue
:returns: Updated QueueInstance
:rtype: twilio.rest.api.v2010.account.queue.QueueInstance'

def update(self, friendly_name=values.unset, max_size=values.unset):

    data = values.of({'FriendlyName': friendly_name, 'MaxSize': max_size})
    payload = self._version.update('POST', self._uri, data=data)
    return QueueInstance(self._version, payload, account_sid=self._solution['account_sid'], sid=self._solution['sid'])
