@Override
      public @NotNull List<String> getSubIndexerVersion(@NotNull Collection<Pair<ElementPattern<FileContent>, String>> pairs) {
        return pairs.stream().map(p -> p.getSecond()).sorted().collect(Collectors.toList());
      }
@Override
      public @NotNull List<String> getSubIndexerVersion(@NotNull Collection<Pair<ElementPattern<FileContent>, String>> pairs)