Examine source code of Group Same Container Tabs

{
  "author": "igorlogius",
  "homepage_url": "https://github.com/igorlogius/webextensions/tree/main/group-same-container-tabs",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {},
  "description": "Group tabs which are in the same containers",
  "manifest_version": 2,
  "name": "Group Same Container Tabs",
  "permissions": [
    "cookies",
    "tabs",
    "menus",
    "tabGroups",
    "contextualIdentities"
  ],
  "version": "1.0.4",
  "browser_specific_settings": {
    "gecko": {
      "id": "{05b2f23f-05bd-4688-bc5a-70393b6d6b37}"
    }
  }
}