code: function follow (cid, links, err, obj) {
        if (err) {
          return cb(err)
        }
  
        if (!links.length) {
          // done tracing, obj is the target node
          return cb(null, cid.buffer)
        }
  
        const linkName = links[0]
        const nextObj = obj.links.find(link => link.name === linkName)
        if (!nextObj) {
          return cb(new Error(
            `no link named "${linkName}" under ${cid.toBaseEncodedString()}`
          ))
        }
  
        objectAPI.get(nextObj.cid, follow.bind(null, nextObj.cid, links.slice(1)))
      }
docs: recursively follow named links to the target node