code: def __getitem__(self, index):
      data = self.dataset[index]
      if self.original_fn:
          # turn single element into list for default colleta_fn
          data = self.original_fn([data])
      if self.collate_fn:
          data = self.collate_fn(data)
      return data
  
file_path: BigDL/python/nano/src/bigdl/nano/deps/openvino/pytorch/dataloader.py
imports: from openvino.tools.pot import DataLoader
  from torch.utils.data.dataloader import DataLoader
  from bigdl.nano.utils.common import invalidInputError
label_desc: Use image node_id 2 for calling the PytorchOpenVINODataLoader obj's underlying member method code with example usage: obj.__getitem__(index) and returns: data