private ColumnHeaderReorderDragMode dragMode;
private DataLayerFixture testLayer;
@Before
public void setup() {
model = new ColumnGroupModelFixture();
model.addColumnsIndexesToGroup("G4", 18, 19, 20);
model.getColumnGroupByIndex(0).setUnbreakable(true);
model.getColumnGroupByIndex(10).setUnbreakable(true);