public static synchronized void register(final boolean force) {
  if (!registered || force) {
    final OperationRegistry registry = JAI.getDefaultInstance().getOperationRegistry();

    final RenderedImageFactory rif = new WarpRIF();
    registry.registerFactory(
        RenderedRegistryMode.MODE_NAME,
        "Warp",
        "it.geosolutions.jaiext",
        rif);
    registered = true;
  }
}