public void onResourceSetAdded(ResourceSetAddedEvent e) {
ResourceSet resources = e.getResourceSet();
selectionPresenter.addResourceSet(resources);
}
});
selectionModel.addEventHandler(new ResourceSetRemovedEventHandler() {
@Override
public void onResourceSetRemoved(ResourceSetRemovedEvent e) {
ResourceSet resources = e.getResourceSet();
selectionPresenter.removeResourceSet(resources);
}