def update(self, name=values.unset, code_length=values.unset):
return self._proxy.update(name=name, code_length=code_length, )<EOL>
Update the ServiceInstance

:param unicode name: Friendly name of the service
:param unicode code_length: Length of verification code. Valid values are 4-10

:returns: Updated ServiceInstance
:rtype: twilio.rest.preview.acc_security.service.ServiceInstance