@Override
public void configureRegistry(IConfigRegistry configRegistry) {
configRegistry.registerConfigAttribute(
CellConfigAttributes.CELL_PAINTER, new BeveledBorderDecorator(
new RowGroupHeaderTextPainter()), DisplayMode.NORMAL,
GridRegion.ROW_GROUP_HEADER);
// We are not setting a special configuration for rendering grid lines,
// as this would override the column header configuration. This is
// because the the column group header is part of the column header
// region.