code: def test_multiplex_saved_model(self):
      path = os.path.join(self.create_tempdir(), "model")
      model_using_multiplex.save(multiplex_4_op.multiplex, path)
      result = model_using_multiplex.load_and_use(path)
      self.assertAllEqual(
          result, tf.constant([1, 20, 3, 40, 5], dtype=tf.int64)
      )
  
file_path: tensorflow-upstream/tensorflow/examples/custom_ops_doc/multiplex_4/multiplex_4_test.py
imports: import os
  import numpy
  import tensorflow
  from tensorflow.examples.custom_ops_doc.multiplex_4 import model_using_multiplex
  from tensorflow.examples.custom_ops_doc.multiplex_4 import multiplex_4_op
  from tensorflow.python.framework import errors_impl
  from tensorflow.python.framework import test_util
label_desc: Use image node_id 3 for calling the MultiplexOpTest obj's underlying member method code with example usage: obj.test_multiplex_saved_model() without return types