DataLayer cornerDataLayer = new DataLayer(cornerDataProvider);
CornerLayer cornerLayer = new CornerLayer(cornerDataLayer,
rowHeaderLayer, columnHeaderLayer);
// Grid
GridLayer gridLayer = new GridLayer(compFreeze, columnHeaderLayer,
rowHeaderLayer, cornerLayer, false);
CompositeLayer compositeGridLayer = new CompositeLayer(1, 2);
final GroupByHeaderLayer groupByHeaderLayer = new GroupByHeaderLayer(
groupByModel, gridLayer, columnHeaderDataProvider);