code: public WorkerWebUIBlockInfo setFileBlocksOnTier(
        List<ImmutablePair<String, List<UIFileBlockInfo>>> FileBlocksOnTier) {
      mFileBlocksOnTier = FileBlocksOnTier;
      return this;
    }
docs: Sets file blocks on tier.
  
  @param FileBlocksOnTier the file blocks on tier
  @return the file blocks on tier