code: def monthly(self):
          
          if self._monthly is None:
              self._monthly = MonthlyList(self._version, account_sid=self._solution['account_sid'], )
          return self._monthly
docs: Access the monthly
  
          :returns: twilio.rest.api.v2010.account.usage.record.monthly.MonthlyList
          :rtype: twilio.rest.api.v2010.account.usage.record.monthly.MonthlyList