I want to know where is the v2 client

`
package dgo

import (
	"context"
	"fmt"
	"math/rand"
	"strings"
	"sync"

	"github.com/dgraph-io/dgo/v2/protos/api"
	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/metadata"
	"google.golang.org/grpc/status"
)
`
It seems that only v2 client can support operations on dgraph v1.1.*, but I find no v2 client under dgo directory