text: from .value_extractor import Extractor
  
  class customExtractor(Extractor):
      def __init__(self,data_type_name,extraction_expression, color):
          super(customExtractor, self).__init__(data_type_name,extraction_expression,[],color)
  
      def try_extract(self, customData):
          print("customExtrator try extract:{}".format(customData))
          print(type(customData))
          if customData.data_type_name!=self.data_type_name:
              return
  
          return customData