paceSelector": {
  "matchExpressions": [
    {
      "key": "environment",
      "operator": "In",
      "values": [
        "prod",
        "staging"
      ]
    }
  ]
}

See https://kubernetes.io/docs/concepts/overview/working-with-objects/labels for more examples of label selectors.

Default to the empty LabelSelector, which matches everything.
…	
$io.k8s.api.coordination.v1.LeaseList