prompt: Your task is to convert the following English description into an ASCII tree format.
  
  babel-plugin-external-helpers is a principal directory that maintains 2 subdirectories: src and test.
  At the top level, The 'src' section is empty.
  At the main level, 'test' encapsulates 1 test-related directories.
  At level 2, in directory path 'test → fixtures', 'fixtures' encompasses 1 folders: opts.
  In nested path 'test → fixtures → opts', 'opts' contains 1 subdirectory elements: whitelist.
  Within directory hierarchy 'test → fixtures → opts → whitelist', The 'whitelist' directory is empty.
  
  
  Format your response in this style:
  ```
  artifactTransforms-minify
   +--groovy
   |   +--producer
   |   |   `--src
   |   |       `--main
   |   |           `--java
   |   |               `--producer
   |   `--src
   |       `--main
   |           `--java
   +--kotlin
   |   +--producer
   |   |   `--src
   |   |       `--main
   |   |           `--java
  ```
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "babel-plugin-external-helpers\n +--src\n `--test\n     `--fixtures\n         `--opts\n             `--whitelist", "description": "babel-plugin-external-helpers is a principal directory that maintains 2 subdirectories: src and test.\nAt the top level, The 'src' section is empty.\nAt the main level, 'test' encapsulates 1 test-related directories.\nAt level 2, in directory path 'test \u2192 fixtures', 'fixtures' encompasses 1 folders: opts.\nIn nested path 'test \u2192 fixtures \u2192 opts', 'opts' contains 1 subdirectory elements: whitelist.\nWithin directory hierarchy 'test \u2192 fixtures \u2192 opts \u2192 whitelist', The 'whitelist' directory is empty.\n"}