code: def conferences(self):
          
          if self._conferences is None:
              self._conferences = ConferenceList(self._version, account_sid=self._solution['sid'], )
          return self._conferences
docs: Access the conferences
  
          :returns: twilio.rest.api.v2010.account.conference.ConferenceList
          :rtype: twilio.rest.api.v2010.account.conference.ConferenceList