static long estimateWebBotSize(O o) {
  Collection<S> fields = fields(o);
  new L l;
  for (S field : fields) {
    if (sizeCalculation_shouldIgnoreProgramField(field)) continue;
    O value = get(o, field);
    if (value == null) continue;
    l.add(value);
  }
  
  O[] array = asObjectArray(l);
  new guessDeepObjectSize_recursive_Data data;
  data.seen.add(o);
  ret guessDeepObjectSize_recursive(data, array)-inMemorySizeOfArray(array)+unsafe_sizeOf(o);
}