}
private void addIndicatorNodeToParent() {
List<MutableTreeTableNode> children = Lists.newArrayList();
for (Enumeration<?> en = parent.children(); en.hasMoreElements(); ) {
MutableTreeTableNode child = (MutableTreeTableNode) en.nextElement();
children.add(child);
}
DefaultTreeTableModel treeTableModel = (DefaultTreeTableModel) treeTable.getTreeTableModel();
for (MutableTreeTableNode child : children) {
treeTableModel.removeNodeFromParent(child);