@Override
public StorageDescription getDefaultStorageDescription(HasStorage object) {
StorageDescription sd = super.getDefaultStorageDescription(object);
if(sd instanceof TupleStorageDescription) {
TupleStorageDescription tsd = (TupleStorageDescription)sd;
if(object instanceof Group) {
tsd.setUsage(TupleUsage.KEY_AND_ROW);
} else {
tsd.setUsage(TupleUsage.KEY_ONLY);
}
}
return sd;
}