prompt: Your task is to convert the following English description into an ASCII tree format.
  
  revalidation is a primary directory that incorporates 2 subdirectories: app and components.
  At the main level, Within 'app', you'll find 2 subdirectories for code structure.
  At level 2, in directory path 'app / greeting', The 'greeting' folder is barren.
  Within directory hierarchy 'app > refetch-on-new-base-tree', 'refetch-on-new-base-tree' incorporates 2 directories: a, b.
  Within directory hierarchy 'app → refetch-on-new-base-tree → a', The 'a' collection has yet to be populated.
  At level 3, in directory path 'app / refetch-on-new-base-tree / b', Inside 'b', you'll find it remains unused.
  At the main level, The 'components' directory is devoid of content.
  
  
  Format your response in this style:
  ```
  samples
   +--basic
   |   `--_expected
   +--missing-dependency-resolution
   +--missing-entry-resolution
   +--missing-load
   +--renormalizes-external-paths
   |   `--_expected
   `--supports-hashes
       `--_expected
  ```
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "revalidation\n +--app\n |   +--greeting\n |   `--refetch-on-new-base-tree\n |       +--a\n |       `--b\n `--components", "description": "revalidation is a primary directory that incorporates 2 subdirectories: app and components.\nAt the main level, Within 'app', you'll find 2 subdirectories for code structure.\nAt level 2, in directory path 'app / greeting', The 'greeting' folder is barren.\nWithin directory hierarchy 'app > refetch-on-new-base-tree', 'refetch-on-new-base-tree' incorporates 2 directories: a, b.\nWithin directory hierarchy 'app \u2192 refetch-on-new-base-tree \u2192 a', The 'a' collection has yet to be populated.\nAt level 3, in directory path 'app / refetch-on-new-base-tree / b', Inside 'b', you'll find it remains unused.\nAt the main level, The 'components' directory is devoid of content.\n"}