tableColumnModel.addFlexiColumnModel(exampleCustomColumnModel);
// column 7 : Link
tableColumnModel.addFlexiColumnModel(new DefaultFlexiColumnModel("guidemo.table.header7"));
FlexiTableDataModel tableDataModel = FlexiTableDataModelFactory.createFlexiTableDataModel(new SampleFlexiTableModel(this), tableColumnModel);
FlexiTableElment fte = FormUIFactory.getInstance().addTableElement("gui-demo", tableDataModel, formLayout);
}