code: def testReduce(self):
      shape = tensor_shape.TensorShape([2, 3])
      ctor, args = shape.__reduce__()
      self.assertEqual(ctor, tensor_shape.TensorShape)
      self.assertEqual(
          args,
          ([tensor_shape.Dimension(2), tensor_shape.Dimension(3)],),
      )
      reconstructed = ctor(*args)
      self.assertEqual(reconstructed, shape)
  
imports: from absl.testing import parameterized
  from tensorflow.core.framework import tensor_shape_pb2
  from tensorflow.core.function import trace_type
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import tensor_shape
  from tensorflow.python.framework import test_util
  from tensorflow.python.platform import googletest
label_desc: Use image node_id 20 for calling the ShapeTest obj's underlying member method code with example usage: obj.testReduce() without return types