undefined: resolver.ResolveNowOption
go get go.etcd.io/etcd/clientv3# github.com/coreos/etcd/clientv3/balancer/resolver/endpointC:\Users\gaoev\go\pkg\mod\github.com\coreos\etcd@v3.3.27+incompatible\clientv3\balancer\resolver\endpoint\endpoint.go:114:78: undefined: resolver.BuildOptionC:
