execOpts, ok := opts.(*api.PodExecOptions)
	if !ok {
		return nil, fmt.Errorf("invalid options object: %#v", opts)
	}
	location, transport, err := pod.ExecLocation(ctx, r.Store, r.KubeletConn, name, execOpts)
	if err != nil {
		return nil, err
	}
	handler := newThrottledUpgradeAwareProxyHandler(location, transport, false, true, responder)

) (*url.URL, http.RoundTripper, error) {
	return streamLocation(ctx, getter, connInfo, name, opts, opts.Container, "attach")
}

// ExecLocation returns the exec URL for a pod container. If opts.Container is blank
// and only one container is present in the pod, that container is used.
func ExecLocation(
	ctx context.Context,
	getter ResourceGetter,
	connInfo client.ConnectionInfoGetter,
	name string,
	opts *api.PodExecOptions,