integration/cluster.go
func (m *member) Clone(t testing.TB) *member {
	mm := &member{}
	mm.ServerConfig = m.ServerConfig

	var err error
	clientURLStrs := m.ClientURLs.StringSlice()
	mm.ClientURLs, err = types.NewURLs(clientURLStrs)
	if err != nil {
		// this should never fail
		panic(err)
	}
	peerURLStrs := m.PeerURLs.StringSlice()
	mm.PeerURLs, err = types.NewURLs(peerURLStrs)
	if err != nil {
		// this should never fail
		panic(err)
	}
	clusterStr := m.InitialPeerURLsMap.String()
	mm.InitialPeerURLsMap, err = types.NewURLsMap(clusterStr)
	if err != nil {
		// this should never fail
		panic(err)
	}
	mm.InitialClusterToken = m.InitialClusterToken
	mm.ElectionTicks = m.ElectionTicks
	mm.PeerTLSInfo = m.PeerTLSInfo
	mm.ClientTLSInfo = m.ClientTLSInfo
	return mm
}
func (m *member) Clone(t testing.TB) *member {
	mm := &member{}
	mm.ServerConfig = m.ServerConfig

	var err error
	clientURLStrs := m.ClientURLs.StringSlice()
	mm.ClientURLs, err = types.NewURLs(clientURLStrs)
	if err != nil {
		// this should never fail
		panic(err)
	}
	peerURLStrs := m.PeerURLs.StringSlice()
	mm.PeerURLs, err = types.NewURLs(peerURLStrs)
	if err != nil {
		// this should never fail
		panic(err)
	}
	clusterStr := m.InitialPeerURLsMap.String()
	mm.InitialPeerURLsMap, err = types.NewURLsMap(clusterStr)
	if err != nil {
		// this should never fail
		panic(err)
	}
	mm.InitialClusterToken = m.InitialClusterToken
	mm.ElectionTicks = m.ElectionTicks
	mm.PeerTLSInfo = m.PeerTLSInfo
	mm.ClientTLSInfo = m.ClientTLSInfo
	return mm
}
// Clone returns a member with the same server configuration. The returned
// member will not set PeerListeners and ClientListeners.