code: def test(self):
      return ShapeNetDataset(
          self, "test", self.num_points, self.normal_channel
      )
  
imports: import json
  import os
  from zipfile import ZipFile
  import dgl
  import numpy
  import tqdm
  from dgl.data.utils import download, get_download_dir
  from scipy.sparse import csr_matrix
  from torch.utils.data import Dataset
label_desc: Use image node_id 5 for calling the ShapeNet obj's underlying member method code with example usage: obj.test() and returns: ShapeNetDataset