@ApiStatus.Internal
  @Override
  @SuppressWarnings("unchecked")
  protected <Key> UpdatableIndex<Key, Void, FileContent, ?> getIndex(@NotNull StubIndexKey<Key, ?> indexKey) {
    return (UpdatableIndex<Key, Void, FileContent, ?>)getAsyncState().myIndices.get(indexKey);
  }
@ApiStatus.Internal
  @Override
  @SuppressWarnings("unchecked")
  protected <Key> UpdatableIndex<Key, Void, FileContent, ?> getIndex(@NotNull StubIndexKey<Key, ?> indexKey)