code: def getApprovalVsTotal(self) -> str:
      approvalCount = self.getNumApprovedSegmentation()
      idxTotalApproved = f"{approvalCount}/{self.getTotalNumImages()}"
      return idxTotalApproved
  
imports: import datetime
  import logging
  from typing import Dict, List
  from MONAILabelReviewerLib.ImageData import ImageData
  from MONAILabelReviewerLib.MONAILabelReviewerEnum import Level
label_desc: Use image node_id 17 for calling the ImageDataExtractor obj's underlying member method code with example usage: obj.getApprovalVsTotal() and returns: idxTotalApproved