Examine source code of Open Temp Container

{
  "author": "igorlogius",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_area": "navbar"
  },
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "id": "{4908d5d9-b33e-4cae-9cfe-9d7093ae4d9b}"
    }
  },
  "commands": {
    "openinsame": {
      "description": "Open TC with active URL"
    },
    "opennewtab": {
      "description": "Open TC with about:newtab"
    }
  },
  "description": "Open bookmarks, links or tabs in temporary containers",
  "homepage_url": "https://github.com/igorlogius/webextensions/tree/main/sources/open-temp-container",
  "icons": {
    "512": "icon.png"
  },
  "manifest_version": 2,
  "name": "Open Temp Container",
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "contextualIdentities",
    "cookies",
    "menus",
    "storage",
    "tabs",
    "bookmarks"
  ],
  "version": "1.3.55"
}