message: Fix exported version of keras's model_to_estimator.
diff: @@ -65,7 +65,7 @@ def model_to_estimator(
  raise NotImplementedError(
  'tf.keras.estimator.model_to_estimator function not available in your '
  'installation.')
  - keras_lib.model_to_estimator(
  + return keras_lib.model_to_estimator(
  keras_model=keras_model,
  keras_model_path=keras_model_path,
  custom_objects=custom_objects,
  