prompt: Your task is to convert the following English description into an ASCII tree format.
  
  v5 is a source directory that holds 4 subdirectories. Notable ones include helper, memfs, osfs among others.
  
  Let me break down the setup for you:
  
  At the main level, 'helper' encompasses 2 contained folders: chroot, polyfill.
  Within directory hierarchy 'helper → chroot', 'chroot' is unpopulated.
  In nested path 'helper → polyfill', The 'polyfill' storage space is an empty container.
  Back to the top level.
  At the top level, The 'memfs' data structure stands empty.
  At the top level, 'osfs' remains unused.
  In the root directory, Inside 'util', you'll find it is a vacant space.
  
  
  Format your response in this style:
  ```
  gradle
   +--api
   +--internal
   `--util
       `--internal
  ```
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "v5\n +--helper\n |   +--chroot\n |   `--polyfill\n +--memfs\n +--osfs\n `--util", "description": "v5 is a source directory that holds 4 subdirectories. Notable ones include helper, memfs, osfs among others.\n\nLet me break down the setup for you:\n\nAt the main level, 'helper' encompasses 2 contained folders: chroot, polyfill.\nWithin directory hierarchy 'helper \u2192 chroot', 'chroot' is unpopulated.\nIn nested path 'helper \u2192 polyfill', The 'polyfill' storage space is an empty container.\nBack to the top level.\nAt the top level, The 'memfs' data structure stands empty.\nAt the top level, 'osfs' remains unused.\nIn the root directory, Inside 'util', you'll find it is a vacant space.\n"}