code: def save_config(self, cmd="save config", confirm=True, confirm_response="y"):
          
          self.enable()
          if confirm:
              output = self.send_command_timing(command_string=cmd)
              if confirm_response:
                  output += self.send_command_timing(confirm_response)
              else:
                  # Send enter by default
                  output += self.send_command_timing(self.RETURN)
          else:
              # Some devices are slow so match on trailing-prompt if you can
              output = self.send_command(command_string=cmd)
          return output
docs: Saves Config.