/**
* Page constructor.
*/
public EditableTreeTablePage()
{
IColumn columns[] = new IColumn[] {
new PropertyTreeColumn(new ColumnLocation(Alignment.LEFT, 18, Unit.EM),
"Tree Column", "userObject.property1"),
new PropertyEditableColumn(new ColumnLocation(Alignment.LEFT, 12, Unit.EM), "L2",
"userObject.property2"),
new PropertyEditableColumn(new ColumnLocation(Alignment.MIDDLE, 2,