oe.setTileCache(JAI.getDefaultInstance().getTileCache());
oe.setTileWidth(256);
oe.setTileHeight(256);
oe.setSourcePath(TestData.file(this, "DEM_.tiff").getAbsolutePath());
final List<Throwable> exceptions = new ArrayList<Throwable>();
oe.addProcessingEventListener(new ProcessingEventListener() {
@Override
public void getNotification(ProcessingEvent event) {
LOGGER.info(event.toString());