prompt: Your task is to convert the following English description into an ASCII tree format.
  
  external is a base directory that comprises 2 subdirectories: descriptor and model.
  At the top level, Inside 'descriptor', you'll find it hasn't been filled with any content.
  At the main level, 'model' carries 2 child directories: ivy, maven.
  Within directory hierarchy 'model → ivy', The 'ivy' data structure awaits content.
  In nested path 'model → maven', Inside 'maven', you'll find it is currently empty.
  Back to the top level.
  
  
  Format your response in this style:
  ```
  scripts
   +--_lib
   +--build
   |   +--_lib
   |   `--localeSnapshots
   |       +--_lib
   |       +--renderFormatDistance
   |       +--renderFormatDistanceStrict
   |       +--renderFormatDuration
   |       +--renderFormatParse
   |       `--renderFormatRelative
   +--maintain
   +--release
   `--test
       `--_lib
  ```
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "external\n +--descriptor\n `--model\n     +--ivy\n     `--maven", "description": "external is a base directory that comprises 2 subdirectories: descriptor and model.\nAt the top level, Inside 'descriptor', you'll find it hasn't been filled with any content.\nAt the main level, 'model' carries 2 child directories: ivy, maven.\nWithin directory hierarchy 'model \u2192 ivy', The 'ivy' data structure awaits content.\nIn nested path 'model \u2192 maven', Inside 'maven', you'll find it is currently empty.\nBack to the top level.\n"}