How to retrieve the hash from CID v1?

Help Coding
1

My app uses the following code to save to IPFS with CID v1:

      for await (const file of await ipfs.add({

                    path:file_name,

                    content: Buffer.from(data),

                    }, {

                    pin: false,

                    cidVersion:1,

                    })) {}

How do I retrieve ths hash from file? Is it in file.cid.mutihash.toString()?