Examine source code of Folder Containers

{
  "manifest_version": 2,
  "name": "Folder Containers",
  "version": "1.0",
  "description": "Automatically open bookmarks from specific folders in assigned containers.",
  "permissions": [
    "bookmarks",
    "contextualIdentities",
    "menus",
    "storage",
    "tabs",
    "webNavigation"
  ],
  "background": {
    "page": "background.html"
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "browser_action": {
    "default_icon": "icons/icon-48.png",
    "default_title": "Folder Containers"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "folder-containers@michaelmassoni.com",
      "strict_min_version": "130.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}