Examine source code of My Session Manager

{
  "manifest_version": 3,
  "name": "My Session Manager",
  "description": "Save and restore browser sessions (windows and tabs), with autosave support.",
  "version": "1.0.0",
  "author": "Your Name",
  "browser_specific_settings": {
    "gecko": {
      "id": "my-session-manager@example.com",
      "strict_min_version": "145.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "action": {
    "default_title": "My Session Manager",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.svg",
      "32": "icons/icon-32.svg",
      "48": "icons/icon-48.svg",
      "96": "icons/icon-96.svg"
    }
  },
  "permissions": [
    "tabs",
    "storage",
    "sessions"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "icons/icon-16.svg",
    "32": "icons/icon-32.svg",
    "48": "icons/icon-48.svg",
    "96": "icons/icon-96.svg"
  }
}