prompt: Your task is to convert the following English description into an ASCII tree format.
  
  app is a root directory that features 3 subdirectories: (group), metadata-layout-forbidden and navigate-forbidden.
  At the top level, '(group)' keeps 1 subdirectory elements: group-dynamic.
  Within directory hierarchy '(group) / group-dynamic', 'group-dynamic' holds 1 folders: [id].
  In nested path '(group) > group-dynamic > [id]', Inside '[id]', you'll find it contains no subdirectories.
  At the main level, Inside 'metadata-layout-forbidden', you'll find it is a vacant space.
  In the root directory, 'navigate-forbidden' contains no subdirectories.
  
  
  Format your response in this style:
  ```
  main
   +--java
   |   `--org
   |       `--gradle
   |           `--sample
   `--webapp
  ```
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "app\n +--(group)\n |   `--group-dynamic\n |       `--[id]\n +--metadata-layout-forbidden\n `--navigate-forbidden", "description": "app is a root directory that features 3 subdirectories: (group), metadata-layout-forbidden and navigate-forbidden.\nAt the top level, '(group)' keeps 1 subdirectory elements: group-dynamic.\nWithin directory hierarchy '(group) / group-dynamic', 'group-dynamic' holds 1 folders: [id].\nIn nested path '(group) > group-dynamic > [id]', Inside '[id]', you'll find it contains no subdirectories.\nAt the main level, Inside 'metadata-layout-forbidden', you'll find it is a vacant space.\nIn the root directory, 'navigate-forbidden' contains no subdirectories.\n"}