Laravel dingoApi 的 Transformers 问题？

然而我还想调用AuthenticateTransformers里的getAuthenticatedUser怎么能做到？不会一个Transformers就执行一个function吧.... 以下是代码

// Transformers
class AuthenticateTransformers extends TransformerAbstract
{
    /**
     * @param \App\Models\Customer $customer
     *
     * @return array
     */
    public function transform(Customer $customer)
    {
        return [
            'id' => $customer['id'],
            'name' => $customer['name'],
            'username' => $customer['username']
        ];
    }

    /**
     * @param \App\Models\Customer $customer
     *
     * @return array
     */
    public function getAuthenticatedUser(Customer $customer)
    {
        return [
            'id' => $customer['id'],
            'name' => $customer['name'],
            'username' => $customer['username'],
            'secret' => $customer['secret'],
            'startDate' => $customer['startDate']
        ];
    }
}

// 回调
return $this->item($customer, new AuthenticateTransformers, function ($resource, $fractal) {

            $fractal->setSerializer(new CustomSerializer());

});

// 然而我还想调用`AuthenticateTransformers`里的`getAuthenticatedUser`怎么能做到？不会一个Transformers就执行一个`function`吧....