class_docstr: COCOEvalCap code is adopted from https://github.com/tylin/coco-caption
class_docstr_tok: ["COCOEvalCap","code","is","adopted","from","https",":","\/\/github.com\/tylin\/coco-caption"]
code: def set_eval_imgs(self):
      self.eval_imgs = [
          eval for img_id, eval in self.img_to_eval.items()
      ]
  
file_path: mmf/tools/scripts/coco/coco_caption_eval.py
imports: import argparse
  import json
  from pycocoevalcap.bleu.bleu import Bleu
  from pycocoevalcap.cider.cider import Cider
  from pycocoevalcap.meteor.meteor import Meteor
  from pycocoevalcap.rouge.rouge import Rouge
  from pycocoevalcap.spice.spice import Spice
  from pycocoevalcap.tokenizer.ptbtokenizer import PTBTokenizer
label_desc: Use image node_id 5 for calling the COCOEvalCap obj's underlying member method code with example usage: obj.set_eval_imgs() without return types