document = izer();
document = izer.ize();
  assert(doc != NULL);  Unload();  Clock perf;  perf.Start();  MathMLizer izer(doc);  document = izer();  perf.Stop();  logger(LOG_INFO, "MathMLization time: %dms", perf());  if (document != NULL) {    perf.Start();    document->Normalize();    perf.Stop();    logger(LOG_INFO, "normalization time: %dms", perf());        root = document->GetRoot();    assert(root != NULL);    Setup();    return true;  } else