public Optional<String> volumeMode() {
        return Optional.ofNullable(this.volumeMode);
    }
@return volumeMode defines if a volume is intended to be used with a formatted filesystem or to remain in raw block state. Value of Filesystem is implied when not included in spec.
sdk/java/src/main/java/com/pulumi/kubernetes/core/v1/outputs/PersistentVolumeSpecPatch.java