code: def test_getSingleImageDataById_found_ImageData(self):
      returnedImageData = (
          self.imageDataExtractor.getSingleImageDataById(
              imageId="imageId_1"
          )
      )
      expectedImageData = self.nameToImageData["imageId_1"]
      self.assertTrue(
          self.areEqual(expectedImageData, returnedImageData)
      )
  
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 24 for calling the ImageDataExtractorTest obj's underlying member method code with example usage: obj.test_getSingleImageDataById_found_ImageData() without return types