old_contents: from coalib.output.Interactor import Interactor
  
  
  class NullInteractor(Interactor):
      def print_result(self, result, file_dict):
          pass
  
      def print_results(self, result_list, file_dict):
          pass
  
      def did_nothing(self):
          pass
  
      def begin_section(self, section):
          pass
  
      def acquire_settings(self, settings):
          # We can't get settings here, if bears need them, they better fail.
          pass
  
new_contents: from coalib.output.Interactor import Interactor
  
  
  class NullInteractor(Interactor):
      """
      This interactor can be used for headless setups, it requires no interaction
      from the user.
      """
  
      def print_result(self, result, file_dict):
          pass
  
      def print_results(self, result_list, file_dict):
          pass
  
      def did_nothing(self):
          pass
  
      def begin_section(self, section):
          pass
  
      def acquire_settings(self, settings):
          # We can't get settings here, if bears need them, they better fail.
          pass
  
subject: Add documentation