code: def getNumOfSegmented(self) -> int:
      count = 0
      for idList in self.clientToImageIds.values():
          count += len(idList)
      return count
  
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 13 for calling the ImageDataExtractor obj's underlying member method code with example usage: obj.getNumOfSegmented() and returns: count