code: private WDataTable createTable() {
  		WDataTable tbl = new WDataTable();
  		tbl.addColumn(new WTableColumn("First name", new WTextField()));
  		tbl.addColumn(new WTableColumn("Last name", new WTextField()));
  		tbl.addColumn(new WTableColumn("DOB", new WDateField()));
  		tbl.setExpandMode(ExpandMode.CLIENT);
  
  		TableTreeNode root = createTree();
  		tbl.setDataModel(new ExampleTreeTableModel(root));
  
  		return tbl;
  	}
docs: Creates and configures the table to be used by the example. The table is configured with global rather than user
  data. Although this is not a realistic scenario, it will suffice for this example.
  
  @return a new configured table.