prompt: Your task is to convert the following English description into an ASCII tree format.
  
  invalid-module is a core directory that groups 2 subdirectories: node_modules and pages.
  In the root directory, 'node_modules' keeps 1 packages: example.
  At level 2, in directory path 'node_modules / example', The 'example' section has nothing inside.
  At the main level, The 'pages' data structure is vacant.
  
  
  Format your response in this style:
  ```
  docs
   +--dsl
   |   +--docbook
   |   |   `--model
   |   +--links
   |   `--source
   |       `--model
   `--model
  ```
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "invalid-module\n +--node_modules\n |   `--example\n `--pages", "description": "invalid-module is a core directory that groups 2 subdirectories: node_modules and pages.\nIn the root directory, 'node_modules' keeps 1 packages: example.\nAt level 2, in directory path 'node_modules / example', The 'example' section has nothing inside.\nAt the main level, The 'pages' data structure is vacant.\n"}