prompt: Your task is to convert an English description into an ASCII tree format using this style:
  ```
  logical-expression
   +--deopzimize-while-included
   +--mutate-logical-expression
   |   `--_expected
   `--simplify-non-boolean
  ```
  
  Convert this description:
  
  graceful-shutdown-next-after is a source directory that comprises 2 subdirectories: custom-server and next-start.
  At the main level, 'custom-server' hosts 1 contained folders: app.
  In nested path 'custom-server → app', Inside 'app', you'll find it has no content.
  Back to the top level.
  At the top level, 'next-start' comprises 1 folders: app.
  Within directory hierarchy 'next-start > app', The 'app' storage space remains unused.
  Back to the top level.
  
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "graceful-shutdown-next-after\n +--custom-server\n |   `--app\n `--next-start\n     `--app", "description": "graceful-shutdown-next-after is a source directory that comprises 2 subdirectories: custom-server and next-start.\nAt the main level, 'custom-server' hosts 1 contained folders: app.\nIn nested path 'custom-server \u2192 app', Inside 'app', you'll find it has no content.\nBack to the top level.\nAt the top level, 'next-start' comprises 1 folders: app.\nWithin directory hierarchy 'next-start > app', The 'app' storage space remains unused.\nBack to the top level.\n"}