prompt: Your task is to convert an English description into an ASCII tree format using this style:
  ```
  packages
   +--pkg-a
   |   `--src
   +--pkg-b
   |   `--src
   `--shared
       `--src
  ```
  
  Convert this description:
  
  app is a fundamental directory that includes 2 subdirectories: _private and nested.
  At the main level, The '_private' directory is devoid of content.
  At the top level, 'nested' encapsulates 1 subfolders: _private.
  At level 2, in directory path 'nested → _private', Inside '_private', you'll find it has yet to be populated.
  
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "app\n +--_private\n `--nested\n     `--_private", "description": "app is a fundamental directory that includes 2 subdirectories: _private and nested.\nAt the main level, The '_private' directory is devoid of content.\nAt the top level, 'nested' encapsulates 1 subfolders: _private.\nAt level 2, in directory path 'nested \u2192 _private', Inside '_private', you'll find it has yet to be populated.\n"}