code: func (o *AggregatorOptions) AddFlags(fs *pflag.FlagSet) {
  	o.RecommendedOptions.AddFlags(fs)
  	o.APIEnablement.AddFlags(fs)
  	fs.StringVar(&o.ProxyClientCertFile, "proxy-client-cert-file", o.ProxyClientCertFile, "client certificate used identify the proxy to the API server")
  	fs.StringVar(&o.ProxyClientKeyFile, "proxy-client-key-file", o.ProxyClientKeyFile, "client certificate key used identify the proxy to the API server")
  }
docs: // AddFlags is necessary because hyperkube doesn't work using cobra, so we have to have different registration and execution paths