Examine source code of Open Bookmark Folder in New Window

{
  "author": "igorlogius",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "description": "adds a context menu to the bookmark folders to open direct children inside a new window",
  "icons": {},
  "manifest_version": 2,
  "name": "open-bookmark-folder-in-window",
  "permissions": [
    "menus",
    "bookmarks"
  ],
  "version": "1.0.1"
}