public function createBuyerReturnItem(array $product, BuyerReturn $buyerReturn): void 	{ 		$buyerReturn->item()->create([ 			'name' => $product['name'], 			'serial_number' => $product['serial_number'], 			'brand' => $product['brand'] ?? null, 			'wand_id' => $product['wand_id'] ?? null, 			'note' => $product['note'] ?? null, 			'is_under_warranty' => (bool) $product['is_under_warranty'],  		]); 	}