class_docstr: Flickr default teacher that expects open-ended descriptions of images.
code: def submit_load_request(self, image_id):
      img_path = os.path.join(self.image_path, "%d.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 import build
  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) without return types