func (c *httpClusterClient) getLeaderEndpoint() (string, error) {
	mAPI := NewMembersAPI(c)
	leader, err := mAPI.Leader(context.Background())
	if err != nil {
		return "", err
	}

	return leader.ClientURLs[0], nil // TODO: how to handle multiple client URLs?
}
func (n *ng) reconnect() error {
	n.Close()
	var client etcd.Client
	cfg := n.getEtcdClientConfig()
	var err error
	if client, err = etcd.New(cfg); err != nil {
		return err
	}
	ctx, cancelFunc := context.WithCancel(context.Background())
	n.context = ctx
	n.cancelFunc = cancelFunc
	n.client = client
	n.kapi = etcd.NewKeysAPI(n.client)
	n.requireQuorum = true
	if n.options.EtcdConsistency == "WEAK" {
		n.requireQuorum = false
	}
	return nil
}