final CheckBox loose1 = new CheckBox("looseCheck1", Model.of(Boolean.FALSE));
final CheckBox loose2 = new CheckBox("looseCheck2", Model.of(Boolean.FALSE));
final CheckBox loose3 = new CheckBox("looseCheck3", Model.of(Boolean.FALSE));
final CheckBox loose4 = new CheckBox("looseCheck4", Model.of(Boolean.FALSE));
form.add(loose1, loose2, loose3, loose4);
form.add(new CheckBoxSelector("looseSelector", loose1, loose2, loose3, loose4));
}