public REXClassExpressionImpl testREXObjectAllValuesFrom(
			REXObjectPropertyExpressionImpl role,
			REXClassExpressionImpl filler) {
		// TODO Auto-generated method stub
		REXClassExpressionImpl all = role.alls.get(filler);
		if(all == null && filler.complement != null)
			all = role.somes.get(filler.complement);
		if(all != null)
			return all.complement;
		else
			return null;
	}