docs: def exit_enable_mode(self, exit_command="exit"):
          """Exit enable mode."""
          delay_factor = self.select_delay_factor(delay_factor=0)
          output = ""
          if self.check_enable_mode():
              self.write_channel(self.normalize_cmd(exit_command))
              time.sleep(0.3 * delay_factor)
              self.set_base_prompt()
              if self.check_enable_mode():
                  raise ValueError("Failed to exit enable mode.")
          return output