prompt: Your task is to convert the following English description into an ASCII tree format.
  
  app is a core directory that houses 2 subdirectories: page-throws-in-after and route-throws-in-after.
  At the main level, 'page-throws-in-after' includes 2 contained folders: callback, promise.
  Within directory hierarchy 'page-throws-in-after / callback', 'callback' holds no subdirectories at the moment.
  At level 2, in directory path 'page-throws-in-after → promise', 'promise' has no folders inside.
  In the root directory, 'route-throws-in-after' has 2 subfolders: callback, promise.
  At level 2, in directory path 'route-throws-in-after / callback', 'callback' has been left empty.
  At level 2, in directory path 'route-throws-in-after > promise', Inside 'promise', you'll find it contains no subdirectories.
  Back to the top level.
  
  
  Format your response in this style:
  ```
  sharp-api
   +--app
   |   `--pages
   |       `--api
   `--test
  ```
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "app\n +--page-throws-in-after\n |   +--callback\n |   `--promise\n `--route-throws-in-after\n     +--callback\n     `--promise", "description": "app is a core directory that houses 2 subdirectories: page-throws-in-after and route-throws-in-after.\nAt the main level, 'page-throws-in-after' includes 2 contained folders: callback, promise.\nWithin directory hierarchy 'page-throws-in-after / callback', 'callback' holds no subdirectories at the moment.\nAt level 2, in directory path 'page-throws-in-after \u2192 promise', 'promise' has no folders inside.\nIn the root directory, 'route-throws-in-after' has 2 subfolders: callback, promise.\nAt level 2, in directory path 'route-throws-in-after / callback', 'callback' has been left empty.\nAt level 2, in directory path 'route-throws-in-after > promise', Inside 'promise', you'll find it contains no subdirectories.\nBack to the top level.\n"}