Yii2 advanced app angular

AngularAsset.php

<?php
namespace backend\assets;
use yii\web\AssetBundle;
use yii\web\View;
/**
 * Class AngularAsset
 */
class AngularAsset extends AssetBundle
{
    public $sourcePath = '@bower/angular/';
    public $js = [
        'angular.min.js',
    ];
    public $jsOptions = [
        'position' => View::POS_HEAD,
    ];
}