code: def __iter__(self):
      return self
  
file_path: ffcv/ffcv/loader/epoch_iterator.py
imports: from collections import defaultdict
  from threading import Thread, Event
  from queue import Queue, Full
  from contextlib import nullcontext
  from typing import Sequence, TYPE_CHECKING
  import torch
  from ..traversal_order.quasi_random import QuasiRandom
  from ..utils import chunks
  from ..pipeline.compiler import Compiler
label_desc: Use image node_id 5 for calling the EpochIterator obj's underlying member method code with example usage: obj.__iter__() and returns: self