void registerIndexInitializationProblem(@NotNull ID<?, ?> indexId, @NotNull Throwable problemTrace) {
    assert !myFreezed;

    synchronized (myInitializationProblems) {
      myInitializationProblems.put(indexId.getUniqueId(), problemTrace);
    }
  }
void registerIndexInitializationProblem(@NotNull ID<?, ?> indexId, @NotNull Throwable problemTrace)