private static <T> void compareAndSetUserObject(
final TypedDefaultMutableTreeNode<T> node, final T oldData, final T newData) {
Preconditions.checkNotNull(node);
Preconditions.checkNotNull(oldData);
Preconditions.checkNotNull(newData);
Assert.assertEquals(node.getUserObject(), oldData);
node.setUserObjectSafely(newData);
}
