cancel()
		if err != nil {
			return err
		}
	}
	return nil
}

// String stringer name for this implementation of dns.Store
func (c *CoreDNS) String() string {
	return "etcdDNS"
}

// CoreDNS - represents dns config for coredns server.
type CoreDNS struct {
	domainNames []string
	domainIPs   set.StringSet
	domainPort  string
	prefixPath  string
	etcdClient  *clientv3.Client