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 submit_load_request(self, image_id, split=None):
      if split == "restval":
          img_path = self.image_path.replace("train", "val")
      else:
          img_path = self.image_path
      img_path += "%012d.jpg" % (image_id)
      self.data_loader.request_load(
          self.receive_data, self.image_loader.load, (img_path,)
      )
  
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 6 for calling the DefaultTeacher obj's underlying member method code with example usage: obj.submit_load_request(image_id, split) without return types