private @NotNull Set<CharSequence> getOrCreateAdoptedNames(boolean caseSensitive) {
      Set<CharSequence> adopted = adoptedNames;
      if (adopted == null) {
        adopted = CollectionFactory.createCharSequenceSet(caseSensitive);
        adoptedNames = adopted;
      }
      return adopted;
    }
private @NotNull Set<CharSequence> getOrCreateAdoptedNames(boolean caseSensitive)