Examine source code of Persitent Containers

{
  "manifest_version": 3,
  "name": "Persitent Containers",
  "version": "2.0.0",
  "author": "navchandar",
  "description": "Makes new tabs inherit the container of the currently active tab, just like Chromium browsers",
  "permissions": [
    "tabs",
    "cookies",
    "contextualIdentities",
    "storage",
    "tabGroups"
  ],
  "optional_permissions": [],
  "externally_connectable": {
    "ids": [
      "@testpilot-containers"
    ]
  },
  "action": {
    "default_icon": {
      "16": "icons/icon.svg",
      "32": "icons/icon.svg"
    },
    "default_title": "Persistent Containers Settings",
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "icons/icon.svg",
    "32": "icons/icon.svg",
    "48": "icons/icon.svg",
    "128": "icons/icon.svg"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "commands": {
    "open-new-tab-without-container": {
      "suggested_key": {
        "default": "Alt+T"
      },
      "description": "Open a new tab without Container"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "persistent-containers-mv3@navchandar.github.io",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}