laravel5.4 安装好redis扩展 phpstorm不提示

<?php

namespace App\Http\Controllers;

use App\Models\User;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\Facades\Redis;

class UserController extends Controller
{
/**
Display a listing of the resource.

@return \Illuminate\Http\Response
/
public function index()
{
var_export(Redis::get('name'));
die;
}
}