prompt: Your task is to convert the following English description into an ASCII tree format.
  
  schematics is a base directory that holds 2 subdirectories: migrations and ng-add.
  At the top level, 'migrations' encapsulates 1 nested folders: dtl-as-dev-dependency.
  Within directory hierarchy 'migrations > dtl-as-dev-dependency', Inside 'dtl-as-dev-dependency', you'll find it is blank.
  At the main level, Inside 'ng-add', you'll find it hasn't been filled with any content.
  
  
  Format your response in this style:
  ```
  ws
   +--__snapshots__
   `--test
       `--__snapshots__
  ```
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "schematics\n +--migrations\n |   `--dtl-as-dev-dependency\n `--ng-add", "description": "schematics is a base directory that holds 2 subdirectories: migrations and ng-add.\nAt the top level, 'migrations' encapsulates 1 nested folders: dtl-as-dev-dependency.\nWithin directory hierarchy 'migrations > dtl-as-dev-dependency', Inside 'dtl-as-dev-dependency', you'll find it is blank.\nAt the main level, Inside 'ng-add', you'll find it hasn't been filled with any content.\n"}