all_order_items = $order_items; } public function get_airalo_order_items(): array { $this->airalo_order_items = array_filter($this->all_order_items, function ( WC_Order_Item $order_item ) { return strpos( $order_item->get_product()->get_sku(), self::SKU_PREFIX ) === 0; }); return $this->airalo_order_items; } }