class_docstr: Computes ROUGE Scores.
class_docstr_tok: ["Computes","ROUGE","Scores","."]
code: def create_accumulator(self) -> _Accumulator:
      return _Accumulator()
  
imports: import dataclasses
  from typing import Dict, Iterable, Optional
  from absl import logging
  import apache_beam
  import nltk
  from tensorflow_model_analysis.metrics import metric_types
  from tensorflow_model_analysis.metrics import metric_util
  from tensorflow_model_analysis.proto import config_pb2
  from rouge_score import rouge_scorer
  from rouge_score import scoring
  from rouge_score import tokenizers
label_desc: Use image node_id 3 for calling the RougeCombiner obj's underlying member method code with example usage: obj.create_accumulator() and returns: _Accumulator