if (o instanceof TestElement) {
TestElement item = (TestElement) o;
if (item.isEnabled()) {
if (item instanceof ReplaceableController) {
// HACK: force the controller to load its tree
ReplaceableController rc = (ReplaceableController) item
.clone();
HashTree subTree = tree.getTree(item);
if (subTree != null) {
HashTree replacementTree = rc
.getReplacementSubTree();