NewApi undefined

[flowpig]

there is an error "undefined: api.NewApi" when i use api.NewApi, can you give me some guidance. Here's my code snippet：

import (
        ...
	"go-micro.dev/v4"
	"go-micro.dev/v4/api"
	"go-micro.dev/v4/api/router"
	"go-micro.dev/v4/api/router/registry"
)

	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	r := router.WithRegistry(etcd.NewRegistry(rst.Addrs("127.0.0.1:2379")))
	api := api.NewApi(api.WithRouter(registry.NewRouter(r)))

	if err := api.Run(ctx); err != nil {
		log.Fatal(err)
	}

[flowpig]

sorry i found i use master "go-micro.dev/v4" code, old versions code worked