class_docstr: COCO default teacher that expects open-ended descriptions of images.
class_docstr_tok: ["COCO","default","teacher","that","expects","open-ended","descriptions","of","images","."]
code: def share(self):
      shared = super().share()
      if hasattr(self, "annotation"):
          shared["annotation"] = self.annotation
      shared["image_loader"] = self.image_loader
      if hasattr(self, "cands"):
          shared["cands"] = self.cands
      return shared
  
imports: from typing import Optional
  from parlai.core.params import ParlaiParser
  from parlai.core.opt import Opt
  from parlai.core.teachers import FixedDialogTeacher
  from parlai.core.image_featurizers import ImageLoader
  from parlai.utils.io import PathManager
  from .build_2014 import build
  from .build_2014 import buildImage
  from .build_2017 import build
  from .build_2017 import buildImage
  import os
  import json
  import random
label_desc: Use image node_id 9 for calling the DefaultTeacher obj's underlying member method code with example usage: obj.share() and returns: shared