code: def iter_setup(self):
      list = []
      for i in range(self.batch_size):
          idx = i % len(names)
          with open(names[idx], mode="rb") as f:
              list.append(np.array(bytearray(f.read()), np.uint8))
      self.feed_input(self.raw_file, list)
  
imports: from nvidia.dali import Pipeline, pipeline_def
  import nvidia.dali.fn
  import nvidia.dali.ops
  import nvidia.dali.types
  import scipy.io.wavfile
  import numpy
  import os
  from test_audio_decoder_utils import generate_waveforms, rosa_resample
  from test_utils import compare_pipelines, get_files
label_desc: Use image node_id 3 for calling the DecoderPipeline obj's underlying member method code with example usage: obj.iter_setup() without return types