prompt: Your task is to convert an English description into an ASCII tree format using this style:
  ```
  plugin-commands-store
   +--src
   |   `--storeStatus
   `--test
  ```
  
  Convert this description:
  
  app is a top-level directory that collects 2 subdirectories: a and api.
  At the top level, 'a' remains unused.
  At the top level, 'api' keeps 1 subdirectory elements: test-json.
  In nested path 'api → test-json', The 'test-json' compartment lacks any subdirectories.
  
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "app\n +--a\n `--api\n     `--test-json", "description": "app is a top-level directory that collects 2 subdirectories: a and api.\nAt the top level, 'a' remains unused.\nAt the top level, 'api' keeps 1 subdirectory elements: test-json.\nIn nested path 'api \u2192 test-json', The 'test-json' compartment lacks any subdirectories.\n"}