code: def test_getReviewers(self):
      expectedReviewersIds = ["theRadologist_1", "theRadologist_2"]
      reviewerIds = self.imageDataExtractor.getReviewers()
      self.assertEqual(len(expectedReviewersIds), len(reviewerIds))
      containsReviewers = all(
          id in reviewerIds for id in expectedReviewersIds
      )
      self.assertEqual(True, containsReviewers)
  
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 7 for calling the ImageDataExtractorTest obj's underlying member method code with example usage: obj.test_getReviewers() without return types