class_docstr: CIDEr scorer.
class_docstr_tok: ["CIDEr","scorer","."]
docstr: copy the refs.
docstr_tok: ["copy","the","refs","."]
code: def copy(self):
      """copy the refs."""
      new = CiderScorer(n=self.n)
      new.ctest = copy.copy(self.ctest)
      new.crefs = copy.copy(self.crefs)
      return new
  
file_path: graph4nlp/graph4nlp/pytorch/modules/evaluation/cider_tool/cider_scorer.py
imports: import copy
  import math
  import os
  import sys
  from collections import defaultdict
  import numpy
label_desc: Use image node_id 1 for calling the CiderScorer obj's underlying member method code with example usage: obj.copy() and returns: new