code: def fix_config(self, options):
          
          opt = "incremental"
          if opt not in options:
              options[opt] = False
          if opt not in self.help:
              self.help[opt] = "Whether to load the dataset incrementally (bool)."
  
          opt = "use_custom_loader"
          if opt not in options:
              options[opt] = False
          if opt not in self.help:
              self.help[opt] = "Whether to use a custom loader."
  
          opt = "custom_loader"
          if opt not in options:
              options[opt] = converters.Loader(classname="weka.core.converters.ArffLoader")
          if opt not in self.help:
              self.help[opt] = "The custom loader to use (Loader)."
  
          return super(LoadDataset, 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