Examine source code of Bookmarks Folders Lockerr

{
  "manifest_version": 2,
  "name": "Bookmarks Folders Locker",
  "version": "1.4.2",
  "author": "Fabio Musanni",
  "default_locale": "en",
  "options_ui": {
    "page": "main_page/main_page.html",
    "open_in_tab": true
  },
  "description": "__MSG_extensionShortDescription__",
  "icons": {
    "48": "icons/lock_48x48.png",
    "96": "icons/lock_96x96.png",
    "128": "icons/lock_128x128.png"
  },
  "permissions": [
    "menus",
    "storage",
    "bookmarks",
    "tabs"
  ],
  "background": {
    "page": "background.html"
  },
  "browser_action": {
    "default_icon": {
      "48": "icons/lock_48x48.png",
      "96": "icons/lock_96x96.png",
      "128": "icons/lock_128x128.png"
    },
    "default_title": "Bookmarks Folders Locker"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b9015cab-1e90-4109-9d93-4dd5203a9a6c}"
    }
  }
}