code: def __iter__(self):
      for sample in iter(self.base_dataset):
          if self.batch_size == 1:
              sample = [sample]
          yield self.collate_fn(sample)
  
file_path: audio/test/torchaudio_unittest/example/emformer_rnnt/utils.py
label_desc: Use image node_id 2 for calling the MockDataloader obj's underlying member method code with example usage: obj.__iter__() without return types