if (o instanceof IfcRoot) { String referredGuid = ((IfcRoot) o).getGlobalId(); if (newModel.containsGuid(referredGuid)) { boolean found = false; for (Object q : list) { if (eGet instanceof IfcRoot) { String oldGuid = ((IfcRoot) eGet).getGlobalId(); if (newModel.containsGuid(oldGuid)) {