code: def __iter__(self):
      return self
  
file_path: PGL/examples/metapath2vec/datasets/helper.py
imports: import os
  import sys
  import time
  import warnings
  import queue
  import numpy
  import threading
  import collections
label_desc: Use image node_id 3 for calling the AsynchronousGenerator obj's underlying member method code with example usage: obj.__iter__() and returns: self