@NotNull
  List<? extends IndexableFilesIterator> instantiate(@NotNull Collection<IndexableEntityProvider.IndexableIteratorBuilder> builders,
                                                     @NotNull Project project,
                                                     @NotNull EntityStorage entityStorage);
@NotNull
  List<? extends IndexableFilesIterator> instantiate(@NotNull Collection<IndexableEntityProvider.IndexableIteratorBuilder> builders,
                                                     @NotNull Project project,
                                                     @NotNull EntityStorage entityStorage)