code: def test_classification_labels(self):
      X, y = load_driftbif(10, 100)
      self.assertEqual(set(y), {0, 1})
  
imports: import unittest
  import dask.dataframe
  import numpy
  import pandas
  from tsfresh import extract_features, extract_relevant_features
  from tsfresh.examples.driftbif_simulation import load_driftbif, sample_tau, velocity
  from tsfresh.feature_extraction import MinimalFCParameters
label_desc: Use image node_id 2 for calling the LoadDriftBifTestCase obj's underlying member method code with example usage: obj.test_classification_labels() without return types