How can I pin json to ipfs with pinata (pinJsonToIpfs method) info directory? React

Question

const metadata = {
                pinataContent: {
                    name: nftItem.name,
                    image: imageUrl,
                    description: nftItem.description,
                    external_url: nftItem.externalUrl,
                    attributes: nftItem.attributes || [],
                },
                pinataOptions: { wrapWithDirectory: nftList.length > 1 },
                pinataMetadata: {
                    name: `${nftItem.id}`,
                },
            };

            const pinataMetadata = await axios.post(
                'https://api.pinata.cloud/pinning/pinJSONToIPFS',
                metadata,
                {
                    headers: {
                        'Content-Type': 'application/json',
                        Authorization: `Bearer ${pinata.data.apiJwt}`,
                    },
                },
            );

here I mapping the nftList array, create metadata for every nftItem and trying to pin it. I know only that metadata have a spechial key "wrapWithDirectory", but a cant understand how it works.

The finish result what i wand - when nftList.length > 1 all json metadata files will have saved into 1 folder on pinata ploud account.