options = new OptionGroup("Choose one, small");
options.addStyleName("small");
options.setMultiSelect(false);
options.addItem("Option One");
options.addItem("Option Two");
options.addItem("Option Three");
options.select("Option One");
options.setItemIcon("Option One", testIcon.get());
options.setItemIcon("Option Two", testIcon.get());
options.setItemIcon("Option Three", testIcon.get(true));
row.addComponent(options);