code: def setUp(self):
      docs = turicreate.SArray(
          [{"b": 5, "a": 3}, {"c": 7, "b": 5}, {"a": 2, "d": 3}]
      )
  
      doc_topics = turicreate.SArray(
          [[0.9, 0.1], [0.7, 0.3], [0.1, 0.9]]
      )
  
      word_topics = turicreate.SArray(
          [[0.5, 0.5], [0.1, 0.9], [0.25, 0.75]]
      )
  
      vocabulary = turicreate.SArray(["a", "b", "c"])
  
      self.docs = docs
      self.word_topics = word_topics
      self.doc_topics = doc_topics
      self.vocabulary = vocabulary
      self.num_topics = 2
  
imports: from __future__ import print_function
  from __future__ import division
  from __future__ import absolute_import
  import os
  import tempfile
  import shutil
  import unittest
  import turicreate
  from turicreate.toolkits._main import ToolkitError
  from turicreate.toolkits.topic_model import topic_model
  from turicreate.toolkits.text_analytics import parse_sparse
  from turicreate.toolkits.text_analytics import parse_docword
  from turicreate.toolkits.topic_model import perplexity
  from .None import util
  import time
  import random
  import numpy
  import itertools
label_desc: Use image node_id 1 for calling the UtilitiesTest obj's underlying member method code with example usage: obj.setUp() without return types