code: def score(self, beam, scores):
      return scores
  
imports: import unittest
  from onmt.translate.beam_search import BeamSearch, GNMTGlobalScorer
  from onmt.translate.beam_search import BeamSearchLM
  from copy import deepcopy
  import torch
label_desc: Use image node_id 3 for calling the GlobalScorerStub obj's underlying member method code with example usage: obj.score(beam, scores) and returns: scores