prompt: Your task is to convert an English description into an ASCII tree format using this style:
  ```
  api
   +--plugins
   `--tasks
       `--bundling
  ```
  
  Convert this description:
  
  packages is a base directory that incorporates 2 subdirectories: package-a and package-b.
  In the root directory, 'package-a' hosts 1 folders: src.
  At level 2, in directory path 'package-a → src', The 'src' repository has nothing inside.
  Back to the top level.
  In the root directory, 'package-b' retains 1 nested folders: src.
  Within directory hierarchy 'package-b > src', The 'src' storage space stands empty.
  Back to the top level.
  
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "packages\n +--package-a\n |   `--src\n `--package-b\n     `--src", "description": "packages is a base directory that incorporates 2 subdirectories: package-a and package-b.\nIn the root directory, 'package-a' hosts 1 folders: src.\nAt level 2, in directory path 'package-a \u2192 src', The 'src' repository has nothing inside.\nBack to the top level.\nIn the root directory, 'package-b' retains 1 nested folders: src.\nWithin directory hierarchy 'package-b > src', The 'src' storage space stands empty.\nBack to the top level.\n"}