def usage(self):
        """
        Access the usage

        :returns: twilio.rest.api.v2010.account.usage.UsageList
        :rtype: twilio.rest.api.v2010.account.usage.UsageList
        """
        if self._usage is None:
            self._usage = UsageList(self._version, account_sid=self._solution['sid'], )
        return self._usage
Access the usage

        :returns: twilio.rest.api.v2010.account.usage.UsageList
        :rtype: twilio.rest.api.v2010.account.usage.UsageList