code: def subtract(
      x: List[ExtendedHypothesis], subset: List[ExtendedHypothesis]
  ) -> List[ExtendedHypothesis]:
      """Remove elements of subset if corresponding label ID sequence already exist in x.
  
      Args:
          x: Set of hypotheses.
          subset: Subset of x.
  
      Returns:
         final: New set of hypotheses.
  
      """
      final = []
  
      for x_ in x:
          if any(x_.yseq == sub.yseq for sub in subset):
              continue
          final.append(x_)
  
      return final
  
file_path: espnet/espnet/nets/pytorch_backend/transducer/utils.py
imports: import os
  from typing import Any, Dict, List, Optional, Union
  import numpy
  import torch
  from espnet.nets.pytorch_backend.nets_utils import pad_list
  from espnet.nets.transducer_decoder_interface import ExtendedHypothesis, Hypothesis
label_desc: Use image node_id 4 for calling a global function with example usage: subtract(x, subset) and returns: final