prompt: Your task is to convert the following English description into an ASCII tree format.
  
  app is a fundamental directory that collects 2 subdirectories: a and api.
  At the main level, The 'a' data structure awaits content.
  At the top level, 'api' features 1 directory entries: test-json.
  Within directory hierarchy 'api → test-json', Inside 'test-json', you'll find it is barren.
  Back to the top level.
  
  
  Format your response in this style:
  ```
  gradle
   +--api
   +--internal
   `--util
       `--internal
  ```
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "app\n +--a\n `--api\n     `--test-json", "description": "app is a fundamental directory that collects 2 subdirectories: a and api.\nAt the main level, The 'a' data structure awaits content.\nAt the top level, 'api' features 1 directory entries: test-json.\nWithin directory hierarchy 'api \u2192 test-json', Inside 'test-json', you'll find it is barren.\nBack to the top level.\n"}