code: def extractLabelNames(self, labelsDict: dict) -> List[str]:
      return list(labelsDict.keys())
  
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 12 for calling the JsonParser obj's underlying member method code with example usage: obj.extractLabelNames(labelsDict) and returns: list