code: def __getitem__(self, key):
      item = self.dataset[key]
      return self.process_datapoint(item)
  
file_path: audio/examples/pipeline_wav2letter/datasets.py
imports: import torch
  from torchaudio.datasets import LIBRISPEECH
label_desc: Use image node_id 2 for calling the Processed obj's underlying member method code with example usage: obj.__getitem__(key) and returns: self