code: def test_train_and_save_features(self, model="mnist_flax"):
      FLAGS.model = model
      FLAGS.model_classifier_layer = False
      saved_model_main.train_and_save()
  
file_path: jax/jax/experimental/jax2tf/examples/saved_model_main_test.py
imports: import os
  from absl import flags
  from absl.testing import absltest
  from absl.testing import parameterized
  from jax._src import config
  from jax._src import test_util
  from jax.experimental.jax2tf.examples import saved_model_main
  from jax.experimental.jax2tf.tests import tf_test_util
label_desc: Use image node_id 3 for calling the SavedModelMainTest obj's underlying member method code with example usage: obj.test_train_and_save_features(model) without return types