@NotNull
      @Override
      public ThreeState acceptFileType(@NotNull FileType fileType) {
        DataIndexer<TodoIndexEntry, Integer, FileContent> indexer = PlatformIdTableBuilding.getTodoIndexer(fileType);
        if (indexer == null) return ThreeState.NO;
        else return ThreeState.UNSURE;
      }
@NotNull
      @Override
      public ThreeState acceptFileType(@NotNull FileType fileType)