code: def __iter__(self) -> "_RandomRecBatch":
      self.batch_index = 0
      return self
  
file_path: torchrec/torchrec/datasets/random.py
imports: import itertools
  import sys
  from typing import cast, Iterator, List, Optional
  import torch
  from torch.utils.data.dataset import IterableDataset
  from torchrec.datasets.utils import Batch
  from torchrec.sparse.jagged_tensor import KeyedJaggedTensor
label_desc: Use image node_id 2 for calling the _RandomRecBatch obj's underlying member method code with example usage: obj.__iter__() and returns: self