Examine source code of Session Buddy V2

{
  "manifest_version": 2,
  "name": "Session Buddy V2",
  "version": "1.3",
  "description": "Save, name, manage and restore multiple browser sessions.",
  "permissions": [
    "tabs",
    "storage",
    "downloads"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Session Buddy V2"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{502265fa-89a0-4168-9ee5-d66c47d794c0}"
    }
  }
}