prompt: Your task is to convert the following English description into an ASCII tree format.
  
  experimental-https-server is a root directory that maintains 3 subdirectories: app, certificates and pages.
  At the main level, 'app' contains 1 subdirectories that organize the source code.
  At level 2, in directory path 'app → 1', Inside '1', you'll find it remains unused.
  Back to the top level.
  In the root directory, 'certificates' is barren.
  At the main level, Inside 'pages', you'll find it is devoid of content.
  
  
  Format your response in this style:
  ```
  node_modules
   +--@somenamespace
   |   `--eslint-formatter-foo
   `--eslint-formatter-bar
  ```
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "experimental-https-server\n +--app\n |   `--1\n +--certificates\n `--pages", "description": "experimental-https-server is a root directory that maintains 3 subdirectories: app, certificates and pages.\nAt the main level, 'app' contains 1 subdirectories that organize the source code.\nAt level 2, in directory path 'app \u2192 1', Inside '1', you'll find it remains unused.\nBack to the top level.\nIn the root directory, 'certificates' is barren.\nAt the main level, Inside 'pages', you'll find it is devoid of content.\n"}