public void remove(final MutableTreeNode node) {
if (node == preferredChild) {
final int index = children.indexOf(node);
if (children.size() > index + 1) {
preferredChild = (children.get(index + 1));
} else {
preferredChild = (index > 0) ? (NodeModel) (children.get(index - 1)) : null;
}
}
final int index = getIndex(node);
node.setParent(null);
children.remove(node);
fireNodeRemoved((NodeModel) node, index);
}
