Examine source code of Containers as Tab Groups

{
  "manifest_version": 3,
  "name": "Containers as Tab Groups",
  "version": "1.1.0",
  "description": "Group your tabs automatically by their Multi-Account Container, treating each container like a profile.",
  "homepage_url": "https://github.com/hummusim/container-tab-groups",
  "permissions": [
    "tabs",
    "tabGroups",
    "contextualIdentities",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "containers-as-tab-groups@hummusim",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_title": "Containers as Tab Groups",
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "icons": {
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "commands": {
    "toggle-mute": {
      "suggested_key": {
        "default": "Ctrl+Shift+Period",
        "mac": "Command+Shift+Period"
      },
      "description": "Toggle mute on the audible tab"
    }
  }
}