code: def test_pickle(self):
      obj = KModes()
      serialized = pickle.dumps(obj)
      self.assertTrue(
          isinstance(pickle.loads(serialized), obj.__class__)
      )
  
imports: import pickle
  import unittest
  import numpy
  import pandas
  from kmodes.kmodes import KModes
  from kmodes.util.dissim import ng_dissim, jaccard_dissim_binary, jaccard_dissim_label
label_desc: Use image node_id 1 for calling the TestKModes obj's underlying member method code with example usage: obj.test_pickle() without return types