prompt: Your task is to convert the following English description into an ASCII tree format.
  
  source is a master directory that includes 2 subdirectories: as-promise and core.
  At the main level, The 'as-promise' compartment has been left empty.
  At the top level, 'core' incorporates 1 directory entries: utils.
  Within directory hierarchy 'core > utils', Inside 'utils', you'll find it is vacant.
  
  
  Format your response in this style:
  ```
  custom_resolve_dir
   +--testproj
   |   `--__snapshots__
   `--testproj2
       `--__snapshots__
  ```
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "source\n +--as-promise\n `--core\n     `--utils", "description": "source is a master directory that includes 2 subdirectories: as-promise and core.\nAt the main level, The 'as-promise' compartment has been left empty.\nAt the top level, 'core' incorporates 1 directory entries: utils.\nWithin directory hierarchy 'core > utils', Inside 'utils', you'll find it is vacant.\n"}