code: def test_getNumOfNotSegmented(self):
      numOfNotSegmented = self.imageDataExtractor.getNumOfNotSegmented()
      self.assertEqual(1, numOfNotSegmented)
  
imports: import sys
  import unittest
  from typing import Dict, List
  from MONAILabelReviewerLib.ImageData import ImageData
  from MONAILabelReviewerLib.ImageDataExtractor import ImageDataExtractor
  from MONAILabelReviewerLib.MONAILabelReviewerEnum import Level, SegStatus
label_desc: Use image node_id 9 for calling the ImageDataExtractorTest obj's underlying member method code with example usage: obj.test_getNumOfNotSegmented() without return types