protected String doCreateUpdate(XMLEntityConverter xec) {
final ImportResult ir = new ImportResult();
DataImportService.getInstance().saveUpdateConvertedObjects(xec, ir, false, null);
if (ir.getErrorMessages() != null) {
throw new InvalidContentException(ir.getErrorMessages());
}
final String log = (xec.getLogMessages() != null ? xec.getLogMessages() : "")
+ (xec.getLogMessages() != null ? "\n" : "") + "Updated " + xec.getToUpdate().size()
+ " business objects, Inserted " + xec.getToInsert().size() + " business objects ";