public Optional<String> caBundle() {
        return Optional.ofNullable(this.caBundle);
    }
@return caBundle is a PEM encoded CA bundle which will be used to validate the webhook&#39;s server certificate. If unspecified, system trust roots on the apiserver are used.
sdk/java/src/main/java/com/pulumi/kubernetes/apiextensions/v1beta1/outputs/WebhookClientConfig.java