Call to undefined method HasMany::saveOrFail

[arhitov]

Hello!
Class Illuminate\Database\Eloquent\Relations\HasMany does not implement the method saveOrFail.

Is it a bug or a feature? I couldn't find the answer on the Internet. This feature is really needed.

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\HasMany;

class Shop extends Model 
{
    public function orders(): HasMany
    {
        return $this->hasMany(Order, 'shop_id', 'id');
    }
}

class Order extends Model {}

$shop = Shop::findOrFail(1);
dump(
    in_array('saveOrFail', get_class_methods($shop)), // true
    in_array('saveOrFail', get_class_methods($shop->orders())), // false
);

$order = new Order([...])
$shop->orders()->save($order); // True or False

$order = new Order([...])
$shop->orders()->saveOrFail($order); // Call to undefined method  HasMany::saveOrFail

[arhitov]

Created a issue because... I think this is a bug.