code: func DefaultKubernetesUserAgent() string {
  	return buildUserAgent(
  		adjustCommand(os.Args[0]),
  		adjustVersion(version.Get().GitVersion),
  		gruntime.GOOS,
  		gruntime.GOARCH,
  		adjustCommit(version.Get().GitCommit))
  }
docs: // DefaultKubernetesUserAgent returns a User-Agent string built from static global vars.