static L<AIConcept> findAIConcepts(S ids) {
  ret findAIConcepts(javaTokC(ids));
}

static L<AIConcept> findAIConcepts(Iterable ids) {
  new L<AIConcept> l;
  for (O id : ids)
    if (id instanceof S)
      addIfNotNull(l, aiConceptsMap_cached().get((S) id));
    else if (id instanceof AIConcept)
      l.add((AIConcept) id);
  ret l;
}