optional string group = 1;

  optional string version = 2;

  optional string resource = 3;
}

// A label selector is a label query over a set of resources. The result of matchLabels and
// matchExpressions are ANDed. An empty label selector matches all objects. A null
// label selector matches no objects.
// +structType=atomic
message LabelSelector {

    }

    /**
     * Checks whether `this` expression references the closest receiver in the current position.
     *
     * If it is the case, then we can safely remove the label from it (if it exists).
     */
    private fun FirThisReference.referencesClosestReceiver(): Boolean {
        require(!isImplicit) {
            "It doesn't make sense to handle implicit this references"
        }