@Test
@SuppressWarnings("unchecked")
public void unknownColumnTypeDoesNotTriggerBuilder() {

    final Callback<String> callback = mock(Callback.class);
    columnDefinitionFactory.generateColumnDefinition(dtPresenter,
                                                     new RowNumberCol52(),
                                                     callback);
    verify(callback,
           never()).callback(any(String.class));
}