code: def __getitem__(self, index):
      return self._get_item(index)
  
file_path: dgl/examples/pytorch/pointcloud/pct/ModelNetDataLoader.py
imports: import os
  import warnings
  import numpy
  from torch.utils.data import Dataset
label_desc: Use image node_id 4 for calling the ModelNetDataLoader obj's underlying member method code with example usage: obj.__getitem__(index) and returns: self