thinkphp里的七牛没有这个文件谁知道怎么集成进去

Question

use Qiniu\Auth;
use Qiniu\Storage\BucketManager;

$imgUrl = uniqid();
$accessKey = '';
$secretKey = '-';
$auth = new Auth($accessKey,$secretKey);
$bucketMgr =new BucketManager($auth);
$bucket ='xxx';
$items =$bucketMgr->fetch('http://f1.topit.me/1/33/6a/112175668330c6a331l.jpg',$bucket,"$imgUrl/j/l/logo2.jpg");

我想运行bucketMgr->fetch可是thinkphp集成的qiniu没这个方法