config.ClusterAuthenticationInfo.RequestHeaderGroupHeaders = requestHeaderConfig.GroupHeaders
		config.ClusterAuthenticationInfo.RequestHeaderUsernameHeaders = requestHeaderConfig.UsernameHeaders
	}

	// setup admission
	genericAdmissionConfig := controlplaneadmission.Config{
		ExternalInformers:    versionedInformers,
		LoopbackClientConfig: genericConfig.LoopbackClientConfig,
	}

				}),
				http.HandlerFunc(func(_ http.ResponseWriter, _ *http.Request) {
					t.Errorf("unexpected call to handler")
				}),
				nil,
				&authenticatorfactory.RequestHeaderConfig{
					UsernameHeaders:     headerrequest.StaticStringSlice(testcase.nameHeaders),
					GroupHeaders:        headerrequest.StaticStringSlice(testcase.groupHeaders),
					ExtraHeaderPrefixes: headerrequest.StaticStringSlice(testcase.extraPrefixHeaders),

			WebhookRetryBackoff: apiserveroptions.DefaultAuthWebhookRetryBackoff(),
			ClientCert:          apiserveroptions.ClientCertAuthenticationOptions{},
			RequestHeader: apiserveroptions.RequestHeaderAuthenticationOptions{
				UsernameHeaders:     []string{"x-remote-user"},
				GroupHeaders:        []string{"x-remote-group"},
				ExtraHeaderPrefixes: []string{"x-remote-extra-"},
			},
			RemoteKubeConfigFileOptional: true,
		},