if err != nil {
		return nil, err
	}
	handler := newThrottledUpgradeAwareProxyHandler(location, transport, false, true, responder)
	if utilfeature.DefaultFeatureGate.Enabled(features.TranslateStreamCloseWebsocketRequests) {
		// Wrap the upgrade aware handler to implement stream translation
		// for WebSocket/V5 upgrade requests.
		streamOptions := translator.Options{
			Stdin:  attachOpts.Stdin,

	// beta: v1.30
	//
	// Enables StreamTranslator proxy to handle WebSockets upgrade requests for the
	// version of the RemoteCommand subprotocol that supports the "close" signal.
	TranslateStreamCloseWebsocketRequests featuregate.Feature = "TranslateStreamCloseWebsocketRequests"

	// owner: @richabanker
	// alpha: v1.28
	//
	// Proxies client to an apiserver capable of serving the request in the event of version skew.

- RemoteCommand feature gates for kubectl exec, cp, and attach over WebSockets are now enabled by default (Beta):
  - Server-side feature gate: `TranslateStreamCloseWebsocketRequests`
  - Client-side (kubectl) feature gate: `KUBECTL_REMOTE_COMMAND_WEBSOCKETS`