prompt: Your task is to convert the following English description into an ASCII tree format.
  
  fixtures is a root directory that contains 10 subdirectories. Notable ones include alt1, alt2, double among others.
  
  Let me break down the setup for you:
  
  At the main level, The 'alt1' container has no folders inside.
  In the root directory, 'alt2' has nothing inside.
  At the main level, 'double' stores 1 subfolders: sub.
  Within directory hierarchy 'double / sub', Inside 'sub', you'll find it is barren.
  Back to the top level.
  At the top level, 'nested-renamed' possesses 1 subfolders: once.
  At level 2, in directory path 'nested-renamed / once', The 'once' collection sits empty.
  Back to the top level.
  At the main level, Inside 'sub-infix', you'll find it remains unused.
  At the top level, The 'sub-infix-sep' compartment has nothing inside.
  At the main level, 'sub-prefix' hasn't been filled with any content.
  At the main level, 'sub-prefix-sep' contains no subdirectories.
  At the main level, The 'sub-suffix' data structure is a vacant space.
  At the main level, The 'sub-suffix-sep' data structure is a vacant space.
  
  
  Format your response in this style:
  ```
  go-winio
   +--internal
   |   +--fs
   |   +--socket
   |   `--stringbuffer
   `--pkg
       `--guid
  ```
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "fixtures\n +--alt1\n +--alt2\n +--double\n |   `--sub\n +--nested-renamed\n |   `--once\n +--sub-infix\n +--sub-infix-sep\n +--sub-prefix\n +--sub-prefix-sep\n +--sub-suffix\n `--sub-suffix-sep", "description": "fixtures is a root directory that contains 10 subdirectories. Notable ones include alt1, alt2, double among others.\n\nLet me break down the setup for you:\n\nAt the main level, The 'alt1' container has no folders inside.\nIn the root directory, 'alt2' has nothing inside.\nAt the main level, 'double' stores 1 subfolders: sub.\nWithin directory hierarchy 'double / sub', Inside 'sub', you'll find it is barren.\nBack to the top level.\nAt the top level, 'nested-renamed' possesses 1 subfolders: once.\nAt level 2, in directory path 'nested-renamed / once', The 'once' collection sits empty.\nBack to the top level.\nAt the main level, Inside 'sub-infix', you'll find it remains unused.\nAt the top level, The 'sub-infix-sep' compartment has nothing inside.\nAt the main level, 'sub-prefix' hasn't been filled with any content.\nAt the main level, 'sub-prefix-sep' contains no subdirectories.\nAt the main level, The 'sub-suffix' data structure is a vacant space.\nAt the main level, The 'sub-suffix-sep' data structure is a vacant space.\n"}