code: func (c *CookbookService) ListAvailableVersions(numVersions string) (data CookbookListResult, err error) {
  	path := versionParams("cookbooks", numVersions)
  	err = c.client.magicRequestDecoder("GET", path, nil, &data)
  	return
  }
docs: // ListVersions lists the cookbooks available on the server limited to numVersions
  //   Chef API docs: https://docs.chef.io/api_chef_server.html#cookbooks-name