docs: private static List<TextBlock> extractAllDuplicatedTextBlocks(Iterable<Duplication> duplications) {
      List<TextBlock> duplicatedBlock = new ArrayList<>(size(duplications));
      for (Duplication duplication : duplications) {
        duplicatedBlock.add(duplication.getOriginal());
        for (InnerDuplicate duplicate : from(duplication.getDuplicates()).filter(InnerDuplicate.class)) {
          duplicatedBlock.add(duplicate.getTextBlock());
        }
      }
      return duplicatedBlock;
    }