public Optional<Output<LabelSelectorArgs>> selector() {
        return Optional.ofNullable(this.selector);
    }
@return selector is a label query over pods that should match the replica count. If empty, defaulted to labels on the pod template. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/labels/#label-selectors
sdk/java/src/main/java/com/pulumi/kubernetes/apps/v1beta1/inputs/StatefulSetSpecArgs.java