prompt: Your task is to convert the following English description into an ASCII tree format.
  
  lib is a primary directory that houses 6 subdirectories. Notable ones include compile, refs, runtime among others.
  
  Let me break down the framework for you:
  
  In the root directory, 'compile' shelters 3 directories: codegen, jtd, validate.
  Within directory hierarchy 'compile / codegen', The 'codegen' directory has nothing inside.
  At level 2, in directory path 'compile > jtd', 'jtd' is an empty container.
  In nested path 'compile → validate', 'validate' is a vacant space.
  In the root directory, 'refs' keeps 2 nested folders: json-schema-2019-09, json-schema-2020-12.
  Within directory hierarchy 'refs > json-schema-2019-09', 'json-schema-2019-09' incorporates 1 subdirectory elements: meta.
  Within directory hierarchy 'refs > json-schema-2019-09 > meta', Inside 'meta', you'll find it is devoid of content.
  In nested path 'refs / json-schema-2020-12', 'json-schema-2020-12' retains 1 directory entries: meta.
  At level 3, in directory path 'refs / json-schema-2020-12 / meta', Inside 'meta', you'll find it is unpopulated.
  At the top level, Inside 'runtime', you'll find it is an empty container.
  At the top level, The 'standalone' folder is blank.
  In the root directory, 'types' hasn't been filled with any content.
  In the root directory, 'vocabularies' bundles 8 different folders.
  At level 2, in directory path 'vocabularies / applicator', The 'applicator' data structure is a vacant space.
  At level 2, in directory path 'vocabularies > core', The 'core' folder sits empty.
  Within directory hierarchy 'vocabularies > discriminator', The 'discriminator' directory sits empty.
  Within directory hierarchy 'vocabularies > dynamic', 'dynamic' is unpopulated.
  Within directory hierarchy 'vocabularies / format', The 'format' folder is barren.
  At level 2, in directory path 'vocabularies > jtd', Inside 'jtd', you'll find it is blank.
  At level 2, in directory path 'vocabularies / unevaluated', 'unevaluated' holds no subdirectories at the moment.
  At level 2, in directory path 'vocabularies / validation', Inside 'validation', you'll find it sits empty.
  Back to the top level.
  
  
  Format your response in this style:
  ```
  docs
   +--customization
   +--development
   +--images
   +--samples
   |   `--webpack-getting-started
   |       `--src
   `--usage
  ```
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "lib\n +--compile\n |   +--codegen\n |   +--jtd\n |   `--validate\n +--refs\n |   +--json-schema-2019-09\n |   |   `--meta\n |   `--json-schema-2020-12\n |       `--meta\n +--runtime\n +--standalone\n +--types\n `--vocabularies\n     +--applicator\n     +--core\n     +--discriminator\n     +--dynamic\n     +--format\n     +--jtd\n     +--unevaluated\n     `--validation", "description": "lib is a primary directory that houses 6 subdirectories. Notable ones include compile, refs, runtime among others.\n\nLet me break down the framework for you:\n\nIn the root directory, 'compile' shelters 3 directories: codegen, jtd, validate.\nWithin directory hierarchy 'compile / codegen', The 'codegen' directory has nothing inside.\nAt level 2, in directory path 'compile > jtd', 'jtd' is an empty container.\nIn nested path 'compile \u2192 validate', 'validate' is a vacant space.\nIn the root directory, 'refs' keeps 2 nested folders: json-schema-2019-09, json-schema-2020-12.\nWithin directory hierarchy 'refs > json-schema-2019-09', 'json-schema-2019-09' incorporates 1 subdirectory elements: meta.\nWithin directory hierarchy 'refs > json-schema-2019-09 > meta', Inside 'meta', you'll find it is devoid of content.\nIn nested path 'refs / json-schema-2020-12', 'json-schema-2020-12' retains 1 directory entries: meta.\nAt level 3, in directory path 'refs / json-schema-2020-12 / meta', Inside 'meta', you'll find it is unpopulated.\nAt the top level, Inside 'runtime', you'll find it is an empty container.\nAt the top level, The 'standalone' folder is blank.\nIn the root directory, 'types' hasn't been filled with any content.\nIn the root directory, 'vocabularies' bundles 8 different folders.\nAt level 2, in directory path 'vocabularies / applicator', The 'applicator' data structure is a vacant space.\nAt level 2, in directory path 'vocabularies > core', The 'core' folder sits empty.\nWithin directory hierarchy 'vocabularies > discriminator', The 'discriminator' directory sits empty.\nWithin directory hierarchy 'vocabularies > dynamic', 'dynamic' is unpopulated.\nWithin directory hierarchy 'vocabularies / format', The 'format' folder is barren.\nAt level 2, in directory path 'vocabularies > jtd', Inside 'jtd', you'll find it is blank.\nAt level 2, in directory path 'vocabularies / unevaluated', 'unevaluated' holds no subdirectories at the moment.\nAt level 2, in directory path 'vocabularies / validation', Inside 'validation', you'll find it sits empty.\nBack to the top level.\n"}