code: def update(self, friendly_name=values.unset, api_version=values.unset,
                 sms_url=values.unset, sms_method=values.unset,
                 sms_fallback_url=values.unset, sms_fallback_method=values.unset):
          
          return self._proxy.update(
              friendly_name=friendly_name,
              api_version=api_version,
              sms_url=sms_url,
              sms_method=sms_method,
              sms_fallback_url=sms_fallback_url,
              sms_fallback_method=sms_fallback_method,
          )
docs: Update the ShortCodeInstance
  
          :param unicode friendly_name: A string to describe this resource
          :param unicode api_version: The API version to use to start a new TwiML session
          :param unicode sms_url: URL Twilio will request when receiving an SMS
          :param unicode sms_method: HTTP method to use when requesting the sms url
          :param unicode sms_fallback_url: URL Twilio will request if an error occurs in executing TwiML
          :param unicode sms_fallback_method: HTTP method Twilio will use with sms_fallback_url
  
          :returns: Updated ShortCodeInstance
          :rtype: twilio.rest.api.v2010.account.short_code.ShortCodeInstance