prompt: Your task is to convert the following English description into an ASCII tree format.
  
  nested-n_m is a head directory that groups 2 subdirectories: a and node_modules.
  At the top level, 'a' bundles 1 directories: b.
  Within directory hierarchy 'a > b', 'b' holds 1 subfolders: c.
  At level 3, in directory path 'a → b → c', 'c' holds 1 contained folders: d.
  At level 4, in directory path 'a → b → c → d', Inside 'd', you'll find it has been left empty.
  At the top level, Inside 'node_modules', you'll find it stands empty.
  
  
  Format your response in this style:
  ```
  node-fs-extra
   +--docs
   +--lib
   |   +--__tests__
   |   +--copy
   |   |   `--__tests__
   |   |       `--ncp
   |   |           `--fixtures
   |   |               +--modified-files
   |   |               |   +--out
   |   |               |   `--src
   |   |               `--regular-fixtures
  ```
  
  Provide your answer wrapped in <ascii_formatted> tags.
verification_info: {"ground_truth": "nested-n_m\n +--a\n |   `--b\n |       `--c\n |           `--d\n `--node_modules", "description": "nested-n_m is a head directory that groups 2 subdirectories: a and node_modules.\nAt the top level, 'a' bundles 1 directories: b.\nWithin directory hierarchy 'a > b', 'b' holds 1 subfolders: c.\nAt level 3, in directory path 'a \u2192 b \u2192 c', 'c' holds 1 contained folders: d.\nAt level 4, in directory path 'a \u2192 b \u2192 c \u2192 d', Inside 'd', you'll find it has been left empty.\nAt the top level, Inside 'node_modules', you'll find it stands empty.\n"}