code: def testDict(self):
      raise NotImplementedError
  
imports: import os
  from os.path import join
  import sys
  import paddle
  import numpy
  import pandas
  from paddle.io import Dataset, DataLoader
  from scipy.sparse import csr_matrix
  import scipy.sparse
  from time import time
label_desc: Use image node_id 5 for calling the BasicDataset obj's underlying member method code with example usage: obj.testDict() without return types