code: def test_getLatestVersionTag(self):
      latestVersion = self.imageData.getLatestVersionTag()
      self.assertEqual(latestVersion, "version_2")
  
imports: import json
  import os
  import sys
  import unittest
  from MONAILabelReviewerLib.ImageData import ImageData
  from MONAILabelReviewerLib.JsonParser import JsonParser
  from MONAILabelReviewerLib.SegmentationMeta import SegmentationMeta
label_desc: Use image node_id 7 for calling the ImageDataTest obj's underlying member method code with example usage: obj.test_getLatestVersionTag() without return types