code: def getValueByKey(self, keyArr: List[str], jsonObj: dict):
      if len(keyArr) == 0:
          return ""
      for key in keyArr:
          if key not in jsonObj:
              return ""
          jsonObj = jsonObj[key]
      return jsonObj
  
imports: from typing import Dict, List
  from MONAILabelReviewerLib.DataStoreKeys import DataStoreKeys
  from MONAILabelReviewerLib.ImageData import ImageData
  from MONAILabelReviewerLib.MONAILabelReviewerEnum import Label
  from MONAILabelReviewerLib.SegmentationMeta import SegmentationMeta
label_desc: Use image node_id 3 for calling the JsonParser obj's underlying member method code with example usage: obj.getValueByKey(keyArr, jsonObj) and returns: jsonObj, str, str