static <A extends Concept> bool nuLike uniq_trueIfNew(Class<A> c, O... params) {
  ret uniq_trueIfNew(db_mainConcepts(), c, params);
}

static <A extends Concept> bool nuLike uniq_trueIfNew(Concepts cc, Class<A> c, O... params) {
  ret uniq2(cc, c, params).b;
}