code: def fix_config(self, options):
          
          opt = "search"
          if opt not in options:
              options[opt] = attsel.ASSearch(classname="weka.attributeSelection.BestFirst")
          if opt not in self.help:
              self.help[opt] = "The search algorithm to use (ASSearch)."
  
          opt = "eval"
          if opt not in options:
              options[opt] = attsel.ASEvaluation(classname="weka.attributeSelection.CfsSubsetEval")
          if opt not in self.help:
              self.help[opt] = "The evaluation algorithm to use (ASEvaluation)."
  
          return super(AttributeSelection, self).fix_config(options)
docs: Fixes the options, if necessary. I.e., it adds all required elements to the dictionary.
  
          :param options: the options to fix
          :type options: dict
          :return: the (potentially) fixed options
          :rtype: dict