public Optional<Output<LabelSelectorPatchArgs>> labelSelector() {
        return Optional.ofNullable(this.labelSelector);
    }
@return Select all ClusterTrustBundles that match this label selector.  Only has effect if signerName is set.  Mutually-exclusive with name.  If unset, interpreted as &#34;match nothing&#34;.  If set but empty, interpreted as &#34;match everything&#34;.
sdk/java/src/main/java/com/pulumi/kubernetes/core/v1/inputs/ClusterTrustBundleProjectionPatchArgs.java