code: def unsubscribe(self, name):
          
          self._wait_for_connect()
          if name not in self.subscriptions:
              raise MeteorClientException('No subscription for {}'.format(name))
          self.ddp_client.unsubscribe(self.subscriptions[name]['id'])
          del self.subscriptions[name]
          self.emit('unsubscribed', name)
docs: Unsubscribe from a collection
  
          Arguments:
          name - the name of the publication