code: def calculate_rouge_path(
      pred_path, tgt_path, save_path=None, **kwargs
  ):
      """Kwargs will be passed to calculate_rouge"""
      pred_lns = [x.strip() for x in open(pred_path).readlines()]
      tgt_lns = [x.strip() for x in open(tgt_path).readlines()][
          : len(pred_lns)
      ]
      metrics = calculate_rouge(pred_lns, tgt_lns, **kwargs)
      if save_path is not None:
          save_json(metrics, save_path, indent=None)
      return metrics
  
label_desc: Use image node_id 1 for calling a global function with example usage: calculate_rouge_path(pred_path, tgt_path, save_path) and returns: metrics