// NamespaceOrDefault returns the namespace specified by the user, or the default namespace if none was specified
	NamespaceOrDefault(namespace string) string
}

type instance struct {
	// clients are cached clients for each revision
	clients map[string]kube.CLIClient
	RootFlags
}

func newKubeClientWithRevision(kubeconfig, configContext, revision string) (kube.CLIClient, error) {