How to use the builder-util-runtime.githubUrl function in builder-util-runtime

protected constructor(protected readonly options: GithubOptions, defaultHost: string, runtimeOptions: ProviderRuntimeOptions) {
    super({
      ...runtimeOptions,
      /* because GitHib uses S3 */
      isUseMultipleRangeRequest: false,
    })

    this.baseUrl = newBaseUrl(githubUrl(options, defaultHost))
    const apiHost = defaultHost === "github.com" ? "api.github.com" : defaultHost
    this.baseApiUrl = newBaseUrl(githubUrl(options, apiHost))
  }

protected constructor(protected readonly options: GithubOptions, defaultHost: string, runtimeOptions: ProviderRuntimeOptions) {
    super({
      ...runtimeOptions,
      /* because GitHib uses S3 */
      isUseMultipleRangeRequest: false,
    })

    this.baseUrl = newBaseUrl(githubUrl(options, defaultHost))
    const apiHost = defaultHost === "github.com" ? "api.github.com" : defaultHost
    this.baseApiUrl = newBaseUrl(githubUrl(options, apiHost))
  }

export function computeDownloadUrl(publishConfiguration: PublishConfiguration, fileName: string | null, packager: PlatformPackager) {
  if (publishConfiguration.provider === "generic") {
    const baseUrlString = (publishConfiguration as GenericServerOptions).url
    if (fileName == null) {
      return baseUrlString
    }

    const baseUrl = url.parse(baseUrlString)
    return url.format({...baseUrl as url.UrlObject, pathname: path.posix.resolve(baseUrl.pathname || "/", encodeURI(fileName))})
  }

  let baseUrl
  if (publishConfiguration.provider === "github") {
    const gh = publishConfiguration as GithubOptions
    baseUrl = `${githubUrl(gh)}/${gh.owner}/${gh.repo}/releases/download/${gh.vPrefixedTagName === false ? "" : "v"}${packager.appInfo.version}`
  }
  else {
    baseUrl = getS3LikeProviderBaseUrl(publishConfiguration)
  }

  if (fileName == null) {
    return baseUrl
  }
  return `${baseUrl}/${encodeURI(fileName)}`
}