@Override
	public Object getValueAt( Object node, int column ) 
	{
		System.out.println( "getValueAt: " + node + ", " + column );
		MyTreeNode treenode = ( MyTreeNode )node;
		switch( column )
		{
		case 0: return treenode.getName();
		case 1: return treenode.getDescription();
		case 2: return treenode.getChildren().size();
		default: return "Unknown";
		}
	}