public Optional<Output<String>> preferredHolder() {
        return Optional.ofNullable(this.preferredHolder);
    }
@return PreferredHolder signals to a lease holder that the lease has a more optimal holder and should be given up. This field can only be set if Strategy is also set.
sdk/java/src/main/java/com/pulumi/kubernetes/coordination/v1/inputs/LeaseSpecPatchArgs.java