code: def members(self):
          
          if self._members is None:
              self._members = MemberList(
                  self._version,
                  account_sid=self._solution['account_sid'],
                  queue_sid=self._solution['sid'],
              )
          return self._members
docs: Access the members
  
          :returns: twilio.rest.api.v2010.account.queue.member.MemberList
          :rtype: twilio.rest.api.v2010.account.queue.member.MemberList