prompt: Your task is to convert an English description into an ASCII tree format using this style:
  ```
  buildinit
   +--plugins
   |   `--internal
   |       +--maven
   |       `--modifiers
   `--tasks
  ```
  
  Convert this description:
  
  babel-runtime is a core directory that incorporates 3 subdirectories: helpers, regenerator and test.
  At the main level, 'helpers' stores 1 subdirectory elements: esm.
  In nested path 'helpers → esm', 'esm' contains nothing at present.
  Back to the top level.
  At the main level, 'regenerator' is vacant.
  At the main level, 'test' maintains 1 test-related directories.
  Within directory hierarchy 'test → unittests', Inside 'unittests', you'll find it contains no subdirectories.
  Back to the top level.
  
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "babel-runtime\n +--helpers\n |   `--esm\n +--regenerator\n `--test\n     `--unittests", "description": "babel-runtime is a core directory that incorporates 3 subdirectories: helpers, regenerator and test.\nAt the main level, 'helpers' stores 1 subdirectory elements: esm.\nIn nested path 'helpers \u2192 esm', 'esm' contains nothing at present.\nBack to the top level.\nAt the main level, 'regenerator' is vacant.\nAt the main level, 'test' maintains 1 test-related directories.\nWithin directory hierarchy 'test \u2192 unittests', Inside 'unittests', you'll find it contains no subdirectories.\nBack to the top level.\n"}