code: def assertType(self, obj, cls):
      self.assertEqual(type(obj), cls)
  
imports: import collections
  import copy
  import pickle
  import threading
  from absl.testing import absltest
  from absl.testing import parameterized
  import cloudpickle
  import dill
  from haiku._src import data_structures
  import jax
  import tree
label_desc: Use image node_id 14 for calling the FlatMappingTest obj's underlying member method code with example usage: obj.assertType(obj, cls) without return types