code: def test_save_model_classification(self):
      self.save_model(VowpalWabbitClassifier())
  
file_path: SynapseML/vw/src/test/python/synapsemltest/vw/test_vw.py
imports: import os
  import unittest
  import tempfile
  import pyspark
  from synapse.ml.vw.VowpalWabbitClassifier import VowpalWabbitClassifier
  from synapse.ml.vw.VowpalWabbitRegressor import VowpalWabbitRegressor
  from synapse.ml.vw.VowpalWabbitFeaturizer import VowpalWabbitFeaturizer
  from pyspark.sql.types import *
  from synapsemltest.spark import *
label_desc: Use image node_id 3 for calling the VowpalWabbitSpec obj's underlying member method code with example usage: obj.test_save_model_classification() without return types