Examine source code of ZenMate VPN

{
  "manifest_version": 2,
  "name": "ZenMate VPN",
  "version": "1.0.0",
  "description": "ZenMate VPN extension skeleton for Mozilla Firefox (Manifest V2).",
  "applications": {
    "gecko": {
      "id": "zenmate-vpn-8g8ymc@example.com",
      "strict_min_version": "109.0"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "zenmate-vpn-8g8ymc@example.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  }
}