public synchronized boolean markFinished(Image image, Display display) {
checkHashMaps();
AbstractImageDescriptor desc = (AbstractImageDescriptor)descriptors.get(image);
if (desc != null) {
LocalResourceManager resourceManager = manager.getResourceManager(display);
resourceManager.destroyImage(desc);
if (resourceManager.find(desc) == null) {
descriptors.remove(image);
validateHashMaps();
}
return true;