App\Ninja\Transformers\InvoiceTransformer::includeInvoiceItems PHP Метод

    public function includeInvoiceItems(Invoice $invoice)
    {
        $transformer = new InvoiceItemTransformer($this->account, $this->serializer);
        return $this->includeCollection($invoice->invoice_items, $transformer, ENTITY_INVOICE_ITEM);
    }