code: def test_simple_tagger_can_train_save_and_load(self):
      self.ensure_model_can_train_save_and_load(self.param_file)
  
imports: from __future__ import with_statement
  from __future__ import division
  from __future__ import absolute_import
  from flaky import flaky
  import numpy
  import pytest
  import torch
  from allennlp.common.testing import ModelTestCase
  from allennlp.common.checks import ConfigurationError
  from allennlp.common.params import Params
  from allennlp.data.dataset_readers import DatasetReader
  from allennlp.data.iterators import DataIterator, BasicIterator
  from allennlp.models import Model
  from allennlp.training import Trainer
label_desc: Use image node_id 2 for calling the SimpleTaggerTest obj's underlying member method code with example usage: obj.test_simple_tagger_can_train_save_and_load() without return types