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