Examine source code of Session Manager Declaration

{
  "manifest_version": 2,
  "name": "Session Manager Declaration",
  "version": "1.3",
  "description": "Session Manager Declaration V2 is a Mozilla Firefox extension that helps users save and restore browsing sessions efficiently, managing multiple sets of open tabs and windows to improve productivity and session continuity.",
  "permissions": [
    "tabs",
    "windows",
    "storage",
    "sessions"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_icon": {
      "32": "icons/logo_32.png",
      "64": "icons/logo_64.png",
      "128": "icons/logo_128.png"
    },
    "default_title": "Session Manager Declaration V2",
    "default_popup": "popup.html"
  },
  "icons": {
    "32": "icons/logo_32.png",
    "64": "icons/logo_64.png",
    "128": "icons/logo_128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a6e36590-62cf-44a7-a67e-6a4e850c68f7}"
    }
  }
}