code: def get_sanitize_files(self):
          
          if self.parent.config.option.sanitize_with is not None:
              return [self.parent.config.option.sanitize_with]
          else:
              return []
docs: Return list of all sanitize files provided by the user on the command line.
  
          N.B.: We only support one sanitize file at the moment, but
                this is likely to change in the future