code: def test_getImageDataByClientId_approved_is_true(self):
      imageDataTest_4 = ImageData(
          name="imageId_4",
          fileName="fileName_4",
          nodeName="nodeName_4",
          checkSum="checkSum_4",
          segmented=True,
          timeStamp=1640171961,
          comment="comment_4",
      )
      imageDataTest_4.setClientId("client_id_1")
      imageDataTest_4.setSegmentationFileName(
          "testSegementation_4.nrrd"
      )
      imageDataTest_4.addNewSegmentationMeta(
          tag="final",
          status=self.STATUS.APPROVED,
          level=self.LEVEL.MEDIUM,
          approvedBy="theRadologist_4",
          comment="comment_4",
      )
      self.nameToImageData["imageId_4"] = imageDataTest_4
  
      imageDataExtractor = ImageDataExtractor(
          nameToImageData=self.nameToImageData
      )
      imageDataExtractor.init()
      returnedImageDatas = imageDataExtractor.getImageDataByClientId(
          clientId="client_id_1", approved=True, flagged=False
      )
      self.assertEqual(2, len(returnedImageDatas))
      returnedImageData_1 = list(
          filter(
              lambda image: (image.getName() == "imageId_1"),
              returnedImageDatas,
          )
      )
      returnedImageData_4 = list(
          filter(
              lambda image: (image.getName() == "imageId_4"),
              returnedImageDatas,
          )
      )
  
      self.assertEqual(
          True,
          self.areEqual(
              self.nameToImageData["imageId_1"], returnedImageData_1[0]
          ),
      )
      self.assertEqual(
          True,
          self.areEqual(
              self.nameToImageData["imageId_4"], returnedImageData_4[0]
          ),
      )
  
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 18 for calling the ImageDataExtractorTest obj's underlying member method code with example usage: obj.test_getImageDataByClientId_approved_is_true() without return types