code: def get(self, sid):
          
          return MemberContext(
              self._version,
              service_sid=self._solution['service_sid'],
              channel_sid=self._solution['channel_sid'],
              sid=sid,
          )
docs: Constructs a MemberContext
  
          :param sid: The unique string that identifies the resource
  
          :returns: twilio.rest.chat.v2.service.channel.member.MemberContext
          :rtype: twilio.rest.chat.v2.service.channel.member.MemberContext